Chandra X-Ray Observatory
	(CXC)

Cycle 4 Proposal Abstracts and Targets

Chandra proposals are divided into the following categories:

  1. SOLAR SYSTEM
  2. NORMAL STARS AND WD
  3. WD BINARIES AND CV
  4. BH AND NS BINARIES
  5. SN, SNR AND ISOLATED NS
  6. NORMAL GALAXIES
  7. ACTIVE GALAXIES AND QUASARS
  8. CLUSTERS OF GALAXIES
  9. EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS
  10. GALACTIC DIFFUSE EMISSION AND SURVEYS


***********************************************************************************
SOLAR SYSTEM                                      
--------------------------------------------------

===================================================================================

Proposal Number: 04100120            
Proposal Title: SPATIALLY RESOLVED X-RAY EMISSION FROM SATURN

PI: JAN NESS                       
Subject Category: SOLAR SYSTEM                                      

Abstract: We plan to investigate the spatial distribution of X-ray emission from
Saturn in order to confirm a former detection from Ness & Schmitt 2000 (A&A, 355,
394) found with ROSAT-PSPC and to verify whether the X-ray emission comes from
Saturn's aurora as already found for Jupiter with the HRC-I. This would supply
information about the physical origin of the X-ray emission.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            SATURN                ACIS-S NONE  70.00

===================================================================================

Proposal Number: 04100190            
Proposal Title: MULTIWAVELENGTH OBSERVATIONS OF JUPITER'S AURORAL HOT SPOT

PI: RONALD ELSNER                  
Subject Category: SOLAR SYSTEM                                      

Abstract: Joint Chandra HRC-I and HST STIS observations in Dec 2000 found: (1)
the northern auroral x-ray emission comes from a localized hot spot poleward of
the main auroral oval, magnetically connected to regions in the outer
magnetosphere beyond 30 Jupiter radii; and (2) the x-ray hot spot pulsates with a
period about 45 minutes. The hot spot occurs in a region where both anomalous
infrared emissions and bright, transient far-ultraviolet (FUV) 'flares' have been
observed. These results are inconsistent with excitation by energetic heavy ions
precipitating from the Io plasma torus. We propose simultaneous HST-STIS and
Chandra-ACIS-S observations of Jupiter seeking to understand the source
mechanisms and energetics of the jovian x-ray aurora. We will also seek
simultaneous IRTF observations.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:51:12.64  +18:33:36.40  JUPITER               ACIS-S NONE  41.70
 08:51:45.79  +18:31:25.10  JUPITER               ACIS-S NONE  30.30

===================================================================================

Proposal Number: 04100561            
Proposal Title: OBSERVATION OF SATURN AND TITAN PASSING IN FRONT OF THE CRAB
NEBULA

PI: HIROSHI TSUNEMI                
Subject Category: SOLAR SYSTEM                                      

Abstract: Saturn will have a conjunction with the Crab nebula on January 5,2003,
which is a very rare event since Saturn passes about 1' away from the pulsar. We
propose to observe this spectacular phenomenon with Chandra so that we can apply
the X- ray absorption technique to the Saturnian system. There are three bodies
involv ed in this conjunction: Saturn, its rings and its satellite, Titan. We
will be able to measure the absorption feature of atmospheres of the main body of
Saturn and Titan. We can also measure the X-ray reduction ratio at the ring that
show s the filling factor within the ring.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:34:29.65  +22:01:00.66  TITAN                 ACIS-S HETG  10.40
 05:34:31.66  +22:00:59.26  TITAN                 ACIS-S HETG  11.00
 05:34:33.78  +22:00:58.90  TITAN                 ACIS-S HETG  11.00


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NORMAL STARS AND WD                               
--------------------------------------------------

===================================================================================

Proposal Number: 04200007            
Proposal Title: SPECTROSCOPY OF PRE-MAIN SEQUENCE STARS: TV CRT - ACCRETION OR
DYNAMO?

PI: CLAUDE CANIZARES               
Subject Category: NORMAL STARS AND WD                               

Abstract: The only high-resolution X-ray spectrum of a low-mass, pre-main
sequence Classical T Tauri star, TW Hya, showed dramatic differences from all
other stellar coronal spectra: very cool, sharply peaked temperature
distribution, and high density. Abundances were similar to, but more extreme,
than other coronae: very weak iron, and very strong neon. We attributed the X-ray
emission to accretion, not to a rotationally driven magnetic dynamo. Observations
of a weak-lined T Tauri star, TV Crt (HD98800), in the same association will
provide a valuable comparison of a young corona w/ little or no accretion but of
similar age and evolutionary history. High-resolution studies like these are
required to provide a basis for interpretation of imaging surveys of other
pre-main sequence systems.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:22:05.30  -24:46:39.80  TV CRT                ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04200026            
Proposal Title: AN ULTRADEEP CHANDRA STUDY OF THE ORION NEBULA (HRC GTO TEAM
PORTION)

PI: STEPHEN MURRAY                 
Subject Category: NORMAL STARS AND WD                               

Abstract: This is a request to include 100 ks of Guaranteed Time from the HRC GTO
Team's allocation with the ultradeep Orion Nebula GO proposal. The full science
proposal is presented in the GO Large Project proposal entitled 'An ultradeep
Chandra study of the Orion Nebula', with PI Eric Feigelson. We request that both
the HRC and ACIS Team GTO proposals and the GO proposal be evaluated and approved
or rejected together. The observations must also be scheduled in a single
continuous observation (see Remarks).

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE  70.00

===================================================================================

Proposal Number: 04200045            
Proposal Title: OBSERVATION OF THE CORE OF THE RCRA DARK CLOUD

PI: GORDON GARMIRE                 
Subject Category: NORMAL STARS AND WD                               

Abstract: This is the second observation of this star-forming region where ~100
sources were detected in the first observation. This observation will improve
spectral data and time variability studies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:01:50.60  -36:57:30.00  RCRADARKCLOUD         ACIS-I NONE  40.00

===================================================================================

Proposal Number: 04200048            
Proposal Title: CHANDRA ORION MEGASECOND PROGRAM (***ACIS*** TEAM PORTION)

PI: GORDON GARMIRE                 
Subject Category: NORMAL STARS AND WD                               

Abstract: This is a request to include 50 ks of Guaranteed Time allocated to the
***ACIS*** Team to the ChOMP. The full ChOMP science proposal is presented in the
GO Long Project proposal entitled 'Chandra Orion Megasecond Program' with Eric
Feigelson, PI. We request that all ChOMP GTO and GO proposals be evaluated and
approved or rejected together. The observations must also be scheduled in a
single continuous observation (see Remarks).

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE  50.00

===================================================================================

Proposal Number: 04200050            
Proposal Title: AN ACIS OBSERVATION OF THE MASSIVE STAR-FORMING REGION RCW 49

PI: GORDON GARMIRE                 
Subject Category: NORMAL STARS AND WD                               

Abstract: We will observe RCW 49, a prominent giant H II region, and its ionizing
cluster Westerlund 2, an OB association containing at least a dozen OB stars. Our
observation consists of a single ACIS-I pointing, to resolve and study the
high-mass stellar population in the cluster ionizing the H II region and to image
the bubbles around the two Wolf-Rayet stars.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 10:24:02.50  -57:45:23.00  RCW 49                ACIS-I NONE  40.00

===================================================================================

Proposal Number: 04200052            
Proposal Title: CATCHING THE THIRD GENERATION OF YSOS IN THE CEPB/S155 INTERFACE
REGION

PI: GORDON GARMIRE                 
Subject Category: NORMAL STARS AND WD                               

Abstract: In a single Chandra field we will make a snapshot of the violent
interaction of young stars with their natal cloud. We will be able to study the
properties of two generation of young stars, one, already emerged from the cloud,
and another, deeply embedded into it. The second includes the nearest known
candidate of high mass protostellar object (HMPO). Our goals are: to confirm the
YSO status of IR sources, compare the spectra and variability for different types
of YSOs, search for the extended emission from O-star winds, construct X-ray
luminosity and initial mass functions of the emerged generation, become
acquainted with the X-ray properties of HMPO; and study the star formation
history of this region.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 22:56:47.00  +62:40:00.00  CEP B                 ACIS-I NONE  30.00

===================================================================================

Proposal Number: 04200106            
Proposal Title: THE CORONAL SPECTRA OF POST-T TAURI STARS IN THE NEARBY TUCANAE
ASSOCIATION

PI: SALVATORE SCIORTINO            
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose to observe the two X-ray brightest single young (10-20 Myr)
late-type stars of the recently discovered nearby Tucanae Association. The
collected HETG spectra will allow the unique opportunity of characterizing the
properties of coronae of late-type active single stars still on the radiative
track while contracting toward the main-sequence. This will allow us to
investigate the effect of binarity versus youth in determinig the shape of
differential emission measure distribution and abundances of stellar coronae in a
region of the age-activity-rotation parameter space still essentially
unexplored.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:53:05.90  -50:10:49.90  HIP 92680             ACIS-S HETG  75.00

===================================================================================

Proposal Number: 04200107            
Proposal Title: MORPHOLOGY OF THE X-RAY EMISSION FROM PROTOSTELLAR JETS

PI: FABIO FAVATA                   
Subject Category: NORMAL STARS AND WD                               

Abstract: Following our detection and study of X-ray emission from a shock
associated with a protostellar jet (from L1551 IRS5) we propose to observe with
Chandra HH 355F and HH 311, two shocks associated with protostellar jets for
which previous (unreported) evidence of associated X-ray emission is present. The
spatial resolution of Chandra will allow to study the structure and the
distribution of the X-ray emission along the extent of the shock front, as well
as to perform spatially resolved low-resolution X-ray spectroscopy, thus studying
the physical conditions in the two targets, and also assessing their influence on
the conditions of e.g. the protostellar accretion disk.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:22:04.50  +19:14:37.00  HH 355F               ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04200113            
Proposal Title: CORONAL STRUCTURES IN YELLOW GIANT STARS

PI: F. HARNDEN, JR.                
Subject Category: NORMAL STARS AND WD                               

Abstract: With three ACIS-S/HETG observations of selected yellow giants of
similar masses (equal to about 2 solar masses), we will study the role of
"solar-like" magnetic dynamos in generating the X-ray coronae of such stars and
explore the response of the coronae to changes in internal stellar structure.
Spectroscopic plasma density diagnostics derived from the HETG X-ray spectra will
be used to infer characteristics of the coronal magnetic structures of these
stars in selected post-main-sequence evolutionary stages, testing whether the
size of X-ray emitting structures changes as giants of approximately equal mass
evolve from warmer to cooler temperatures through the Hertzsprung gap.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 23:25:22.80  +23:24:14.80  HD 220657             ACIS-S HETG 110.00

===================================================================================

Proposal Number: 04200117            
Proposal Title: RESOLVING THE TRIPLE PROTOSTAR/T TAU SYSTEM T TAU NS

PI: MANUEL GUEDEL                  
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose to fully resolve the T Tau N/S system in X-rays for the
first time, using the HRC-I on Chandra for 60 ks. The two stars are embedded in
envelopes and accrete matter in accretion disks. Several Herbig-Haro objects are
present, some of which may produce detectable X-rays as well. A third stellar
component has recently been identified; it will be resolved by radio
interferometry also proposed. Correlated activity in both wavelength regimes will
help associate the emission to particular components and will provide insight
into high-energy mechanisms in magnetically accreting protostars.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:21:59.40  +19:32:06.40  T TAU                 HRC-I  NONE  30.00

===================================================================================

Proposal Number: 04200145            
Proposal Title: IMAGING THE JET FROM A HERBIG AE STAR

PI: DOUGLAS SWARTZ                 
Subject Category: NORMAL STARS AND WD                               

Abstract: The nearby Herbig Ae star HD 163296 has a strong, possibly x-ray
emitting, jet extending 6'' above its accretion disk. The combination of an
accretion disk and jet in a relatively old Herbig Ae object, a low extinction due
to a lack of association with dark clouds, the presence of Herbig-Haro objects
along the jet axis, and an otherwise source-free field make HD 163296 a
particularly promising object for imaging spectroscopy with Chandra. We propose a
20~ks non-grating ACIS-S observation of HD 163296 to image the jet, disk, and
other structures; to provide constrain the underlying X-ray emission mechanisms;
and to probe the nature of the magnetic activity, coronae, and outflows of Herbig
Ae systems.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:56:21.00  -21:57:22.00  HD 163296             ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04200248            
Proposal Title: X-RAY ACTIVITY IN M-TYPE GIANTS

PI: MATTHIAS HUENSCH               
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose to observe four M-type giants detected in the course of the
ROSAT all-sky survey in order to confirm the detections, to obtain accurate
positions and count rates, and to explore possible X-ray variability with the
HRC-I. M-type giants are old, low-mass stars to the right of the X-ray dividing
line and are not expected to show magnetic activity and hence X-ray emission at
all. Any X-ray detections among such stars would challenge our ideas of coronal
structures and late stellar activity in giants, since possible companions are not
a reasonable explanation. While two such stars have already been confirmed as
X-ray sources with Chandra in AO2, observations of the remaining stars are
important to determine the fraction of active M-type giants.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:46:06.00  +15:07:54.00  HR 5512               HRC-I  NONE   1.90
 16:38:45.00  +48:55:42.00  HR 6200               HRC-I  NONE   2.70
 17:14:39.00  +14:23:25.00  HR 6406               HRC-I  NONE   1.00
 19:47:27.00  +47:54:28.00  HR 7547               HRC-I  NONE   2.60

===================================================================================

Proposal Number: 04200261            
Proposal Title: TESTING SHOCK THEORIES OF X-RAY EMISSION IN THE YOUNG NEARBY
O-STAR SIGMA ORIONIS

PI: STEPHEN SKINNER                
Subject Category: NORMAL STARS AND WD                               

Abstract: Current theoretical models attribute the X-ray emission of single
O-type stars to strong shocks that form in their line-driven winds. Such models
predict cool X-ray emission (kT < 1 keV) and blueshifted asymmetric emission
lines. In contrast, HETG observations of some O stars show hot dense plasma and
broad symmetric lines. These results have sparked renewed interest in hot star
X-ray emission models that involve magnetic wind confinement. We propose to
observe the young O9V star Sigma Ori with HETG in order to obtain data on line
shapes, centroid shifts, and plasma properties needed to determine if its X-ray
emission is produced by instability-driven shocks and to guide the development of
new models that incorporate dynamic wind-magnetic field interactions.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:38:44.80  -02:36:00.20  HD37468               ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04200300            
Proposal Title: ON THE ORIGIN OF THE X-RAY EMISSION IN LATE B-TYPE STARS

PI: NURIA HUELAMO                  
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose for Chandra observations of X-ray emitting late B-type
stars. Because they are (theoretically) not expected to emit X-rays, their X-ray
detections have been attributed to unresolved late-type, magnetically active
stars. The aim of this study is to resolve close binary systems comprised of late
B-type stars and visual late-type companions, in order to identify the X-ray
emitter. The binary separations are between (1-8)'', i.e. well resolvable by
Chandra but not with previous instruments. If we found that X-rays are always
emitted by the late-type companions, it can be taken as evidence against
intrinsic X-ray emission from late B-type stars. If not, it would indicate that
these stars could be intrinsic X-ray emitters and stellar theories may have to be
revised.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:06:45.60  -04:39:18.60  HD32964               ACIS-I NONE   2.40
 08:38:44.80  -53:05:25.40  HD73952               ACIS-I NONE   7.60
 12:39:52.50  -39:59:14.30  HD110073              ACIS-I NONE   2.10
 15:13:07.70  -36:05:29.10  HD134837              ACIS-I NONE   3.00
 15:13:17.40  -24:00:29.90  HD134946              ACIS-I NONE   2.40

===================================================================================

Proposal Number: 04200331            
Proposal Title: AN ULTRADEEP CHANDRA STUDY OF THE ORION NEBULA (GUEST OBSERVER
PORTION)

PI: ERIC FEIGELSON                 
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose a 850 ks ACIS-I observation of the Orion Nebula spanning
11.5 contiguous days, with GTO Teams providing 150 ks of the time. The Orion
Nebula is the best target in the sky for Chandra study of stellar magnetic
activity and star formation with extensive multiwavelength support. Science goals
include: addressing the mass- and age-dependence of magnetic activity in brown
dwarfs; uncovering the low-mass members of the deeply embedded clusters;
elucidating the absence of an activity-rotation relation in pre-main sequence
stars; measuring flare frequencies, flare plasma conditions and coronal
structures in dozens of active stars; investigate the nature of OB wind shocks;
and studying X-ray effects on circumstellar environments.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE 100.00
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE 170.00
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE 170.00
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE 170.00
 05:35:16.70  -05:23:24.00  ORION NEBULA CLUSTER  ACIS-I NONE 170.00

===================================================================================

Proposal Number: 04200346            
Proposal Title: DISCOVERY OF PARSEC-SCALE OB WIND-SWEPT BUBBLES IN HII REGIONS

PI: LEISA TOWNSLEY                 
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose a deep ACIS observation (80 ksec) of the central cavity of
the Rosette nebula, as a follow-up of a shorter (20 ksec) GO2 observation which
revealed diffuse X-rays pervading the HII region, in addition to hundreds of
individual stellar sources. This may be the long-awaited unambiguous detection of
wind-blown bubbles in HII regions and, as such, will give critical insights into
the astrophysics of OB winds. However, the available Rosette exposure cannot
confidently exclude the possibility that the diffuse component there is, at least
in part, the integrated contribution of thousands of lower-mass members of the OB
association. A longer observation should conclusively resolve this question and
lead to insights into the interaction between massive stars and their
environment.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 06:31:55.50  +04:56:34.00  ROSETTE NEBULA / NGC  ACIS-I NONE  80.00

===================================================================================

Proposal Number: 04200355            
Proposal Title: ACIS IMAGING OF Z CMA SUPERJET

PI: ALBERTO NORIEGA-CRESPO         
Subject Category: NORMAL STARS AND WD                               

Abstract: We want to study the X-ray emission of the FU Orionis binary system Z
CMa. The Z CMa superjet has a angular extent of approximately 8 arcmin, that at a
distance of 1 Kpc corresponds to 2.3pc. The jet is being driven by an embedded
protostar reaching velocities of > 600 km/s creating shocks >300$ km/s and
capable to produce plasma temperatures of more than 1.e+6 K, i.e. well within the
sensitivity threshold of the ACIS detectors. We believe that a longer exposure
coupled with stronger shocks will provide a more convincing picture of X-ray
emission from these objects.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:03:43.10  -11:33:06.20  ZCMA                  ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04200397            
Proposal Title: THE SOLAR-STELLAR CONNECTION IN THE NGC 752 OPEN CLUSTER

PI: THEODORE SIMON                 
Subject Category: NORMAL STARS AND WD                               

Abstract: Observations of old open clusters were performed by ROSAT, but with
limited sensitivity and spatial resolution. This made it possible to study the
evolution of very active binaries in those clusters, but not the coronal
properties of their main sequence stars. We are proposing a 140 ks ACIS-I
observation of the 2 Gyr old cluster, NGC 752. We wish to compare the coronal
activity of its solar-type stars with the Sun and with the 4 Gyr old stars in the
M 67 cluster. NGC 752 fills in the large age gap between the Hyades and the Sun,
and thus extends the coronal activity-age relation past 1 Gyr for the very first
time. We will also study the coronal evolution of post-main sequence stars and
cluster binaries, providing a more complete comparison of their X-ray properties
up to 4 Gyr.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:57:39.00  +37:46:10.00  NGC 752               ACIS-I NONE 140.00

===================================================================================

Proposal Number: 04200415            
Proposal Title: CHANDRA HETGS OBSERVATIONS OF EARLY B SUPERGIANTS

PI: WAYNE WALDRON                  
Subject Category: NORMAL STARS AND WD                               

Abstract: We are requesting Chandra HETGS observations of 2 early B supergiants,
Epsilon Ori (B0Ia, 94 ks) and Kappa Ori (B0.5Ia, 125 ks). Although these stars
are relatively X-ray bright, neither has been observed directly since the
Einstein era. Our HETGS observations of these stars will extend our understanding
of the He-like f/i line ratio dependence on UV flux by providing measurements of
this ratio at lower UV flux levels. The diversity in their wind properties as
compared to other OB stars will allow us to probe different stellar wind
distributed X-ray source models and test the developing concept that the observed
X-rays from OB stars are emerging from their associated X- ray "photospheres"
(i.e., X-ray depth of unity).

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:36:12.70  -01:12:07.00  EPSILON ORI           ACIS-S HETG  94.00

===================================================================================

Proposal Number: 04200417            
Proposal Title: DEEP INSIDE THE LAGOON NEBULA

PI: MARC GAGNE                     
Subject Category: NORMAL STARS AND WD                               

Abstract: The Lagoon Nebula (M8) is one of the brightest galactic HII regions.
While 9 Sgr (O4) and the adjoining OB cluster NGC 6530 have been well studied,
the low-mass population has been difficult to identify. Based on the number of
optically visible OB stars, we predict that a deep ACIS-I exposure of the Lagoon
nebula region will reveal >1500 X-ray sources, most of them classical and
weak-line T-Tauri stars. At the heart of this region is the Hourglass Nebula, its
exciting O7 star Herschel 36, an ultra-compact HII region, a dense cluster of
infrared objects and a ridge of 850um emission cores: signposts of active star
formation. By matching infrared sources with X-ray selected Class I, II and III
YSOs, we will signficantly increase our census of low-mass stars in galactic HII
regions.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:03:45.10  -24:22:05.00  M8                    ACIS-I NONE  15.00
 18:03:45.10  -24:22:05.00  M8                    ACIS-I NONE 165.00

===================================================================================

Proposal Number: 04200436            
Proposal Title: HIGH-RESOLUTION SPECTROSCOPY OF THE CLASSICAL T TAURI STAR SU
AUR

PI: KESTER SMITH                   
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose to obtain high-resolution HETG spectra of the Classical T
Tauri star SU Aur. Classical T Tauri stars are unique amongst magnetically active
late-type stars, in that they are accreting material from a circumstellar disc.
Their magnetospheres therefore contain higher density plasma than a normal
M-dwarf or RS CVn. Complex kinematic behaviour is expected from the infalling
plasma. Furthermore, the interaction between stellar magnetic field and inner
disc may drive reconnection in the magnetosphere. All these processes can be
probed in unprecedented detail by Chandra.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:55:59.40  +30:34:01.50  SU AUR                ACIS-S HETG 101.98

===================================================================================

Proposal Number: 04200452            
Proposal Title: PROBING WEAK-LINED T TAURI STARS WITH CHANDRA

PI: STEVEN KAHN                    
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose to investigate with Chandra ACIS-S/HETG the thermal plasma
properties of two X-ray bright weak-lined T Tauri stars, V773 Tau and HDE 283572.
They represent extreme cases of magnetic activity with rapid rotation, their
X-ray emission is dominated by hot plasma, and they display large flares. V773
Tau probes the PMS stage of low-mass stars, while HDE 283572 probes the PMS stage
of massive A-type stars. Radio coverage will be requested to monitor the
non-thermal emission. The study in both wavelength regimes will give crucial
information on the energetic processes in young stars with magnetically active
coronae and will provide a link between main-sequence stars and YSOs with
accretion disks. Spectra of nearby X-ray bright Class I to III objects will be
obtained for free as well.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:21:58.80  +28:18:06.40  V987 TAU = HDE 28357  ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04200573            
Proposal Title: MAPPING MAGNETIC LOOPS IN THE CORONA OF 44I BOO

PI: NANCY BRICKHOUSE               
Subject Category: NORMAL STARS AND WD                               

Abstract: We propose an LETG/HRC-S observation of the bright, eclipsing contact
binary 44i Boo to map coronal structures at different temperatures. This 120 ks
observation will complement the 60 ks archival HETG oservation, which shows
rotationally broadened line profiles and line centroid shifts as a function of
orbital phase. This emission appears to be related to polar starspots found in
optical Doppler images of rapid rotators. Given the short period of 44i Boo (6.4
hr), and the high spectral resolution at long wavelengths of LETG, the emission
lines from a localized active region will exhibit observable line profile
changes. The LETG/HRC-S spectra will provide line shift measurements, light
curves, and diagnostics for temperature, density, and elemental abundances.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 15:03:47.30  +47:39:14.60  44I BOO               HRC-S  LETG 120.00

===================================================================================

Proposal Number: 04200675            
Proposal Title: X-RAY EMISSION FROM MASSIVE PROTO-STARS

PI: PETER HOFNER                   
Subject Category: NORMAL STARS AND WD                               

Abstract: The formation of massive stars remains a challenge to contemporary
astrophysics. Due to the high extinction in the molecular cloud core where
massive stars form direct observation of the massive proto-stars is only possible
at high X-ray energies. We propose ACIS-I observations of 2 new massive
proto-stars which are still in an active accretion phase. The proposed
observations will allow us to determine for the first time the precise position
of the massive protostars with respect to the surrounding molecular and ionized
gas. The measured luminosity will give first constraints on the physical
mechanism responsible for the X-ray emission and we expect to perform
spectroscopy to derive physical parameters of the matter in the interface between
proto-stellar surface and the accretion disk.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:14:29.06  +41:13:32.50  IRAS 20126+4104       ACIS-I NONE  40.00

===================================================================================

Proposal Number: 04200796            
Proposal Title: X RAYS FROM A HIGHLY ACTIVE, VERY YOUNG BROWN DWARF

PI: JOHN GIZIS                     
Subject Category: NORMAL STARS AND WD                               

Abstract: USing 2MASS data and CTIO photometry, an isolated, 25 Jupiter mass
brown dwarf has been discovered in the TW Hya association. This M8 brown dwarf
shows extremely strong H alpha emission, indicating it is the second member of a
rare class of highly active, young brown dwarfs. Chandra observations are needed
to understand the nature of activity. The proposed observations will obtain an
X-ray spectrum of the brown dwarf, or else set a surprisingly deep upper limit on
any X-ray activity.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:07:33.40  -39:32:54.00  2MASSW J1207334-3932  ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04200847            
Proposal Title: FINE X-RAY TOMOGRAPHY OF PLANETARY NEBULA

PI: JUN'ICHI KOTOKU                
Subject Category: NORMAL STARS AND WD                               

Abstract: Although PNs have been thus made a stimulating new addition to the
X-ray source populations, the X-ray emission mechanisms and the association
between X-ray emitting regions and characteristic features observed in other
wavelengths have not yet been clarified, and samples of X-ray PNs are still quite
limited. To establish the nature of X-ray emitting PNs, observations with a finer
spatial resolution are obviously inevitable. Here, to apply brand-new,
X-ray-morphology diagnostic for another PNs with finer spatial resolution, and to
verify the role of stellar wind which has been critical in the de facto standard
model of the X-ray emission mechanism in PNs, we propose to observe the most
promising candidate, NGC 4361 with Chandra ACIS-S.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:24:31.00  -18:47:09.20  NGC 4361              ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04200848            
Proposal Title: CONSTRAINING THE T TAURI STAR X-RAY EMISSION MECHANISM:
HIGH-RESOLUTION SPECTROSCOPY OF THE YOUNG STAR DOAR 21

PI: ERIC JENSEN                    
Subject Category: NORMAL STARS AND WD                               

Abstract: Though most low-mass pre-main-sequence stars (T Tauri stars) emit
x-rays, the x-ray emission mechanism is not well constrained by existing
observations. We propose high-spectral resolution HETGS/ACIS observations of the
weak-line T Tauri star DoAr 21. Through temperature- and density-sensitive line
ratios, and measurements of line widths, the proposed observation will provide
details on the physical condition in the x-ray emitting region, helping to
distinguish between models of x-ray emission from solar-type magnetic activity
and models of star-disk interactions.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:26:03.20  -24:23:40.00  DOAR 21               ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04200865            
Proposal Title: PROBING THE CORONA OF AN ACTIVE SOLAR-TYPE STAR

PI: GAITEE HUSSAIN                 
Subject Category: NORMAL STARS AND WD                               

Abstract: Observations of active cool stars indicate that flux emerges at high
latitudes. We will use LETG spectra of AB Dor (K0V) to look for rotational
modulation in line profiles and thus to evaluate the locations of emitting
regions. Time-constrained observations are requested in order to obtain
contemporaneous surface magnetic field maps. These maps will be extrapolated to
produce a 3-D coronal field model for the star. The 3-D model can be used to
synthesise Doppler-shifted line profiles as the star rotates in a physically
realistic way that includes self-eclipse effects. This will enable us to probe
the relationship between X-ray emitting structures in the corona and magnetic
structures that can be mapped in detail at the photosphere.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:28:44.50  -65:27:02.20  AB DORADUS            HRC-S  LETG  88.26

===================================================================================

Proposal Number: 04200952            
Proposal Title: HOT GAS IN THE CIRCUMSTELLAR BUBBLE NGC 6888

PI: ROBERT GRUENDL                 
Subject Category: NORMAL STARS AND WD                               

Abstract: Fast stellar winds from massive stars can blow bubbles in the ambient
medium. Bubble interiors should be filled with shocked fast wind at
X-ray-emitting temperatures. Diffuse X-rays have been unambiguously detected in
NGC6888 and S308, two circumstellar bubbles around Wolf-Rayet stars. Both show
X-ray luminosities 1--2 orders of magnitude lower than expected in adiabatic
bubble models. To explain this discrepancy, a mass-loading bubble model has been
proposed and appears to be able to explain the temperature and surface brightness
profiles of S308 as derived from XMM data. We request a deep Chandra ACIS-S
observation of the X-ray-bright northeast part of NGC6888 in order to assess the
applicability of mass-loading bubble models and to quantify the physical process
of cloud evaporation.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:12:35.00  +38:26:30.00  NGC 6888              ACIS-S NONE 100.00

===================================================================================

Proposal Number: 04200970            
Proposal Title: MU LEP: A CASE STUDY FOR THE ORIGIN OF X-RAYS FROM CHEMICALLY
PECULIAR LATE B STARS

PI: EHUD BEHAR                     
Subject Category: NORMAL STARS AND WD                               

Abstract: Bright X-ray emission from isolated late B stars remains unexplained,
as conventional theory predicts these stars neither to have coronae nor to eject
sufficiently intense stellar winds. Among those that have been detected, several
of the brightest are chemically peculiar stars. We propose to observe Mu Lep, the
X-ray brightest HgMn star and to use a variety of spectroscopic techniques as
well as the high angular resolution of Chandra to unveil the source of its X-ray
emission, whether shocks in stellar winds, magnetically active regions, or an
invisible companion. The X-ray-measured abundance patterns will be compared with
those in the photosphere. X-ray emission from peculiar elements, which could
provide a definite association of the X-rays with the B star, will be sought.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:12:55.90  -16:12:19.70  MU LEP (HR 1702, HD   HRC-S  LETG 100.00

===================================================================================

Proposal Number: 04200729            
Proposal Title: INVESTIGATING COLLIDING WINDS AND MAGNETISED STARS IN
PRE-PLANETARY NEBULAE

PI: RAGHVENDRA SAHAI               
Subject Category: NORMAL STARS AND WD                               

Abstract: Preplanetary nebulae (PPNs) - the progenitors of planetary nebulae
(PNs) - hold the key to our understanding of the very late stages of stellar
evolution. Recent HST studies show that the fast wind-slow wind interaction
process believed to produce diffuse X-ray emission from PNs, must already be
active in PPNs. Sensitive observations for X-ray emission in PPNs, however, do
not exist. We propose ACIS-S observations of 4 well-studied PPNs with very fast
outflows in order to directly probe (a) the very hot (10$^{7-8}$K) shocked gas
which must result from the interaction, and (b) the presence of strong stellar
magnetic fields which may be responsible for collimating the fast outflows. These
data will be invaluable in testing theoretical models of X-ray emission in PPNs
and PNs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:42:16.80  -14:42:52.00  OH231.8+4.2           ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04200138            
Proposal Title: HETGS SPECTROSCOPY OF A CORONALLY ACTIVE CONTACT BINARY, VW CEP

PI: DAVID HUENEMOERDER             
Subject Category: NORMAL STARS AND WD                               

Abstract: Short-period binaries represent the extreme in rotational-dynamo
generated coronae. These stars are important for probing the origin and nature of
coronae in the regimes of rapid rotation and activity saturation. A relatively
bright, partially eclipsing, and very active object is VW Cep (P=0.28d). We will
derive emission measure distributions and abundances from diagnostics currently
available only in HETGS spectra. We will also examine spatial distributions
through flux modulation and Doppler shifts. Two hypotheses exist for loop sizes;
HETGS spectra will distinguish between these with density and volume estimates.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:37:21.50  +75:36:01.50  VW CEP                ACIS-S HETG 120.00



***********************************************************************************
WD BINARIES AND CV                                
--------------------------------------------------

===================================================================================

Proposal Number: 04300030            
Proposal Title: NEAR-EDDINGTON ACCRETION IN THE BINARY SUPERSOFT X-RAY SOURCE RX
J0513.3-6951

PI: PETER PREDEHL                  
Subject Category: WD BINARIES AND CV                                

Abstract: Study of the X-ray properties of the binary supersoft X-ray source RX
J0513.3-6951. Search for absorption edges expected in heated atmospheres of white
dwarfs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:13:50.80  -69:51:47.00  RXJ0513.9-6951        HRC-S  LETG  48.00

===================================================================================

Proposal Number: 04300201            
Proposal Title: THE STRUCTURE OF THE BOUNDARY LAYER OF U GEMINORUM IN OUTBURST

PI: CHRISTOPHER MAUCHE             
Subject Category: WD BINARIES AND CV                                

Abstract: U Geminorum in outburst is an ideal laboratory in which to study the
response of the boundary layer of nonmagnetic CVs to the ~3 order-of-magnitude
increase in the mass-accretion rate of dwarf novae in outburst. Despite extensive
observations in quiescence, U Gem has only infrequently been observed in the
X-ray band in outburst, and never with "modern" (CCD, grating) instruments. We
propose to remedy this situation by obtaining a TOO Chandra HETG spectroscopic
observation of U Gem in outburst to determine the emission measure distribution,
the velocity widths of the lines, the plasma density, the wavelength dependence
of the dips in the light curves and the quasiperiodic oscillations, thereby
providing constraints of the thermal, physical, and temporal structure of its
boundary layer.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:55:05.30  +22:00:05.70  U GEM                 ACIS-S HETG  67.00

===================================================================================

Proposal Number: 04300237            
Proposal Title: THE ANISOTROPIC TRANSFER OF RESONANCE PHOTONS IN CATACLYSMIC
VARIABLES

PI: YUKIKATSU TERADA               
Subject Category: WD BINARIES AND CV                                

Abstract: The purpose of the present proposal is to establish a new idea of an
anisotropic transfer of resonance photons in the accretion column of polars,
which we have developed with Monte Carlo simulations and ASCA observations
(Terada et al. 1999, 2001; Terada 2002). Our goal is to demonstrate the
rotational modulation of equivalent width of resonance lines from light elements,
such as S, Si, Al, Mg, Ne, and Na, via Chandra HETG observation of a polar V834
Centauri, and to confirm our scenario by comparing the observed anisotropy with
expectations by our Monte Carlo calculations.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:09:07.50  -45:17:17.10  V834 CENTAURI         ACIS-S HETG  60.00

===================================================================================

Proposal Number: 04300295            
Proposal Title: THE HIGH RESOLUTION X-RAY SPECTRUM OF AM HERCULIS: PROBING THE
ACCRETION PROCESS

PI: KOJI MUKAI                     
Subject Category: WD BINARIES AND CV                                

Abstract: We propose a 100ks Chandra HETG observation of the polar AM Herculis in
a high state. With the good quality, high energy resolution data this will
provide, we will be able to use the HEG to: (i) examine the nature of the 6.4 keV
fluorescence line in order to see if it has its origin in reflection from the
white dwarf surface or absorption in the pre-shock flow. (ii) Measure the widths
of the thermal Fe Kalpha lines in order to constrain the importance of Compton
broadening in this star. Also, using the MEG we will be able to (iii) measure the
line strengths of the lighter elements and examine the physical conditions in the
post-shock region. [NOTE: This is a resubmission of an accepted Cycle 3 TOO
proposal, which has not been triggered as of March 14, 2002.]

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:16:13.30  +49:52:04.20  AM HERCULIS           ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04300437            
Proposal Title: TIMING THE ORBIT OF RX J1914.4+2456: GRAVITATIONAL RADIATION AND
THE NATURE OF THE X-RAY EMISSION

PI: TOD STROHMAYER                 
Subject Category: WD BINARIES AND CV                                

Abstract: We propose observations of RX J1914.4+2456, a candidate
double-degenerate binary with one of the shortest orbital periods known. We have
recently found evidence for gravitational radiation induced decay of its orbit
from precise timing of archival ROSAT observations. Direct study of the orbital
evolution has important implications for the nature of the X-ray flux from this
and related systems. We propose to confirm our preliminary ROSAT orbit ephemeris
and enable long term timing of the orbit to probe the physics of gravitational
radiation and its effect on binary evolution. We will also search for a possibly
hidden orbital period longward of the observed 569 s period. Such future timing
would enable new gravity wave science with NASA's LISA mission.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:14:26.10  +24:56:43.60  RX J1914.4+2456       ACIS-S NONE  10.00
 19:14:26.10  +24:56:43.60  RX J1914.4+2456       ACIS-S NONE  15.00
 19:14:26.10  +24:56:43.60  RX J1914.4+2456       ACIS-S NONE  35.00

===================================================================================

Proposal Number: 04300505            
Proposal Title: IN SEARCH OF THE X-RAY COUNTERPART TO KUV 01584-0939 (CET3)

PI: TOD STROHMAYER                 
Subject Category: WD BINARIES AND CV                                

Abstract: We propose an exploratory Chandra observation of KUV 01584-0939 (Cet3),
a candidate double-degenerate binary with a 10 minute period discovered in the
optical. We have tentatively identified an X-ray counterpart in the ROSAT faint
source catalog (1RXS J020052.9-092435). Our observations will definitively
confirm or reject this identification. The system appears very similar to several
candidate double-degenerate (AM CVn) binaries which show strong modulations in
the X-ray (for example, RX J1914+24 and RX J0806+15). If the candidate ROSAT
source is related to Cet3, then it will very likely be pulsed at or near the 10
min. optical period (which may be a superhump period). We will search for the
X-ray period and if found begin a timing campaign to monitor the orbital
evolution.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:00:52.90  -09:24:35.50  1RXS J020052.9-09243  ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04300626            
Proposal Title: PROBING THE BOUNDARY LAYER AND WIND OF U GEM IN OUTBURST

PI: KNOX LONG                      
Subject Category: WD BINARIES AND CV                                

Abstract: EUVE observations have identified the dwarf nova U Geminorum as the
first (and so far only) example of a disk-accreting white dwarf system with a
"classical" boundary layer. As such, it provides a unique opportunity for
exploring the physics of the accretion disk-central object interaction. We
propose to exploit this opportunity with a 50 ksec HRC-S/LETG observation of U
Gem in outburst in order to obtain high quality, phase resolved spectra. The
observations will allow us to accurately characterize the optically-thick
boundary layer emission and to probe the structure and kinematics of the extended
material, whether wind or accretion stream, surrounding the boundary layer and
disk, and will lead to solid understanding of the nature of the disk-white dwarf
interaction.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:55:05.30  +22:00:06.00  U GEM                 HRC-S  LETG  50.00

===================================================================================

Proposal Number: 04300647            
Proposal Title: MULTIWAVELNGTH TARGET OF OPPORTUNITY OBSERVATIONS OF A BRIGHT
NOVA IN OUTBURST

PI: SUMNER STARRFIELD              
Subject Category: WD BINARIES AND CV                                

Abstract: We propose to obtain spectrophotometry with CHANDRA, plus ground based
optical and IR spectra of one bright nova in outburst. Our X-ray studies have
shown that X-rays are the best tool for studying the hot phase of the outburst.
In Cycle 1 we obtained spectra of V382 Vel and V1494 Aql. V382 Vel showed only an
emission line spectrum in our data while V1494 Aql evolved from an emission line
spectrum to that of a Super Soft Source (SSS). Observations of these phases
provided an opportunity to study the composition of the underlying white dwarf,
the lifetime of the TNR phase of the outburst, and the energy budget of the
explosion. More data on new novae is needed because the behavior of these two
novae was very different, which is expected from theory.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:01:09.38  -22:00:05.90  V4743 Sgr             HRC-S  LETG  25.00
 19:01:09.38  -22:00:05.90  V4743 Sgr             HRC-S  LETG  25.00
 19:01:09.38  -22:00:05.90  V4743 Sgr             ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04300708            
Proposal Title: A UNIFORM STUDY OF GLOBULAR CLUSTER X-RAY SOURCES: THE KEY TO
CLUSTER DYNAMICAL EVOLUTION

PI: WALTER LEWIN                   
Subject Category: WD BINARIES AND CV                                

Abstract: We propose to extend our ongoing studies of the dynamical evolution of
globular clusters by observing their populations of low-luminosity X-ray sources.
Many of these sources are binary systems (or have evolved from them) and hold the
key to the cluster's dynamical evolution. We propose observations of a variety of
clusters with widely different physical properties such as central concentration,
cluster size and mass, which are all key ingredients in the formation and
evolution of binaries. To make this study as uniform as possible, the clusters
will be observed to the same limiting luminosity. Numerical simulations with the
world's fastest computer will assist in the interpretation of our observational
data.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:52:45.30  -26:34:43.00  NGC 288               ACIS-S NONE  55.00
 17:17:07.30  +43:08:11.50  NGC 6341              ACIS-S NONE  52.00
 18:08:02.20  -43:42:19.70  NGC 6541              ACIS-S NONE  46.00

===================================================================================

Proposal Number: 04300925            
Proposal Title: X-RAYING BAADE'S WINDOW THROUGH THE GALACTIC BULGE

PI: JONATHAN GRINDLAY              
Subject Category: WD BINARIES AND CV                                

Abstract: We propose to conduct the first of a two-part deep galactic plane
survey on one ACIS-I field in Baade's Window, a region of low obscuration near
the galactic center. The survey will reach a sensitivity limit of Lx ~ 3 x 10^30
erg/s for sources in the galactic bulge, and thus provide the first census of
accretion powered binaries (cataclysmic variables and quiescent low mass x-ray
binaries) as well as millisecond pulsars to constrain the stellar and binary
evolution of the bulge vs. the populations in globular clusters and the disk.
Optical identifications will be made with a coordinated mosaic survey with ACS on
HST (B/R/Halpha), to achieve a sensitivity for CVs down to their luminosity
function peak at Mv ~9. A later, followup survey would complete the coverage of
Baades Window.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:03:21.70  -29:58:27.00  BAADE'S WINDOW FIELD  ACIS-I NONE 100.00

===================================================================================

Proposal Number: 04300907            
Proposal Title: A X-RAY WINDOW TO V838 MON, A BRIGHT SYMBIOTIC NOVA

PI: MARINA ORIO                    
Subject Category: WD BINARIES AND CV                                

Abstract: We propose to observe V838 Mon, a bright symbiotic star which underwent
a nova like outburst in January of 2002. Symbiotic novae are X-ray sources and
the properties of their X-ray emission indicate how the mass ejection occurs, and
whether the hot white dwarf remnant grows in mass towards the Chandrasekhar mass
and a type Ia SN outburst. Symbiotic nova outburst are observed only every few
years. The last bright outburst of this type was observed in 1944, so this is an
opportunity that should not be missed. Following a short ACIS-S observation, we
propose two grating observations if the source is sufficiently bright.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:04:04.80  -03:50:51.10  V838 MON              HRC-S  LETG  50.00
 07:04:04.80  -03:50:51.10  V838 MON              ACIS-S NONE   7.00
 07:04:04.80  -03:50:51.10  V838 MON              ACIS-S HETG  25.00


***********************************************************************************
BH AND NS BINARIES                                
--------------------------------------------------

===================================================================================

Proposal Number: 04400009            
Proposal Title: REOLVING THE SHORT GAMMA-RAY BURST MYSTERY

PI: KEVIN HURLEY                   
Subject Category: BH AND NS BINARIES                                

Abstract: Gamma-ray bursts may be divided into two categories: short-duration and
long-duration. No X-ray follow-up observation has ever been made for a short GRB,
and despite searches, no optical or radio counterpart has ever been found for one
either. We propose to observe the error boxes of two short bursts detected by the
Interplanetary Network with ACIS-I. The detection of a fading X-ray counterpart
will establish a ~1" position for the burst, which can then be searched much
deeper in the optical and radio ranges for a fading counterpart and a host
galaxy. These observations will help determine whether the origin of the short
bursts is different from those of the long ones (e.g. merging neutron stars vs.
hypernovae).

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:07:46.10  +21:14:17.90  GRB021201             ACIS-I NONE  20.00
 08:07:46.10  +21:14:17.90  GRB021201             ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04400027            
Proposal Title: VARIABILITY IN THE LINE EMISSION OF THE X-RAY PULSAR 4U 1626-67

PI: CLAUDE CANIZARES               
Subject Category: BH AND NS BINARIES                                

Abstract: 4U1626-67 is an ultracompact system which consists of a disk-accreting
magnetic neutron star and a very low mass, hydrogen-depleted companion in a
42-min binary. During AO1 we resolved the Ne/O emission line complex into Doppler
pairs of broadened (~2500 km/s FWHM) lines from highly ionized Ne and O. We argue
that the lines appear to originate in the outer accretion disk. Photoelectric
edges of Ne and O appear stronger than expected from interstellar material.
Recent XMM observations also suggested variability in the line morphology. We
propose to reobserve 4U1626-67 for 100 ks in order to determine variations from
the previously observed line shapes, changes in temperatures and densities, and
their dependence on pulse and binary phase.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:32:16.70  -67:27:42.00  4U 1626-67            ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04400046            
Proposal Title: HIGH RESOLUTION SPECTROSCOPY OF THE LMXB SCO X-1

PI: CLAUDE CANIZARES               
Subject Category: BH AND NS BINARIES                                

Abstract: Sco X-1 is by far the brightest persistent extrasolar X-ray source in
the sky. Early observations showed a bright X-ray continuum and strong K (Fe XXV)
line emission. The source has been well established as an LMXB Z-source spending
most of its time on the so-called flaring branch. Low energy line emission has
been detected in the EINSTEIN OGS, which most likely arises from a photoionized
ADC. Through its variable radio emission it was established as a Galactic-jet
radio source with strong similarities to luminous radio galaxies and quasars and
we expect to observe P Cygni lines from a strong disk wind as observed in Cir
X-1. We developed a specific observation strategy that allows to safely observe
the source with the Chandra HETGS.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:19:55.10  -15:38:25.00  SCO X-1               ACIS-S HETG  15.00

===================================================================================

Proposal Number: 04400140            
Proposal Title: MONITORING THE SPECTRAL VARIABILITY OF THE ULTRALUMINOUS X-RAY
SOURCE IN HOLMBERG IX

PI: PATRICK SLANE                  
Subject Category: BH AND NS BINARIES                                

Abstract: 1E0953.8+6918 is an ultraluminous X-ray source (ULX) residing in HoIX,
a dwarf irregular companion to M81. It is surrounded by an emission nebula which
appears to be shock heated. Recent observations indicate an association between
ULXs and starburst activity, but HoIX is a gas-poor galaxy, leaving such an
interpretation in doubt at least for this source. From our recent studies, we
have established that 1E0953.8+6918 is a point source for which we have
identified a 21st magnitude optical counterpart. Observations to date show that,
like other ULXs, 1E0953.8+6918 shows considerable flux variability on timescales
of weeks to months. Here we propose to study the spectral variations with flux in
order to better assess the nature of this ULX, and its relation to the
surrounding nebula.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 09:57:53.00  +69:03:51.00  1E0953.8+6918         ACIS-S NONE  15.00
 09:57:53.00  +69:03:51.00  1E0953.8+6918         ACIS-S NONE  15.00
 09:57:53.00  +69:03:51.00  1E0953.8+6918         ACIS-S NONE  15.00

===================================================================================

Proposal Number: 04400240            
Proposal Title: FIRST X-RAY DETECTION OF AN ISOLATED BLACKHOLE CANDIDATE
MACHO-96-BLG-5

PI: YOSHIHITO KOBAYASHI            
Subject Category: BH AND NS BINARIES                                

Abstract: All previously known stellar blackholes have been found as close
binaries. The MACHO team recently reported two microlensing events with
exceptionally long duration, lasting several hundred days, suggesting that the
lensing objects are isolated black holes with $\sim$6~$M_{\odot}$ each. We thus
propose a 10~ksec observation of the MACHO-96-BLG-5 lens in X-ray wavelength. By
using the superior spacial resolution of Chandra, we search the X-ray counterpart
of the lens. By testing the hardness ratio, we can test whether MACHO-96-BLG-5 is
undoubtly due to a microlensing by an isolated blackhole or not. This observation
may thus reveal that a Chandra observation of the long duration MACHO events is
aunique and powerful tool to address isolated blackhole searches.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:05:02.50  -27:42:17.00  MACHO-96-BLG-5        ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04400255            
Proposal Title: THE X-RAY JETS OF SS 433

PI: ROBERT FENDER                  
Subject Category: BH AND NS BINARIES                                

Abstract: In the past three years Chandra observations of X-ray jets from AGN
have advanced considerably our understanding of jet physics on large scales. SS
433 is the most famous X-ray binary jet system, and the prototypical
`microquasar'. Powerful quasi-continuous jets are observed from milliarsec- to
arsec-scales, and again on degree scales where they deform the surrounding W50
nebula. In a previous 10 ksec ACIS-S observation we have found unexpected
arcsec-scale X-ray jets, for which have been able to extract spatially-resolved
X-ray spectra revealing a hot continuum and Fe XXV emission lines, contrary to
all models for the evolution of the jet. Based on these observations and
predictions of X-ray line profiles, we request a further, deeper observation of
SS 433 with ACIS-S.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:11:49.60  +04:58:58.00  SS 433                ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04400275            
Proposal Title: LOCATING THE COUNTERPARTS OF THE INTRIGUING X-RAY BURSTERS
X1702-429 AND X1715-321

PI: STEFANIE WACHTER               
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to obtain accurate localizations of two intriguing X-ray
bursters with the Chandra HRC-I in an effort to establish their optical/IR
counterparts. X-ray observations alone can only provide a limited picture of
these sources and many basic characteristics of the binary system have to be
established via optical/IR observations. This project can be achieved with a
minimal amount of observing time (1 ksec for each source) and the results can be
immediately applied to already existing optical/IR data.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:06:16.80  -43:02:31.50  X1702-429             HRC-I  NONE   1.00
 17:18:47.30  -32:10:40.20  X1715-321             HRC-I  NONE   1.00

===================================================================================

Proposal Number: 04400302            
Proposal Title: LOCALIZING THE TRANSIENT 89 SECOND PULSAR XTE J1906+09

PI: RICHARD ROTHSCHILD             
Subject Category: BH AND NS BINARIES                                

Abstract: We propose a 15 ks ACIS-I observation to yield an arcsecond position
for the transient 89-s pulsar XTE J1906+09. RXTE scans located the source within
2', and indicated a possible ~28 day sinusoidal variation in the pulse arrival
times. Recurrent transient pulsars are almost always found in high mass Be-binary
systems, but a search in Simbad reveals no O or B stars within 10'. To add to the
mystery, Corbet's P{spin}/P{orbit} correlation for recurrent transient pulsars
would predict a ~100 day orbital period, not 28 days or 2 years (the recurrence
time). The Chandra precision position will allow for identification of the
counterpart, and we will follow-up with infrared observations to determine the
characteristics of the binary system.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:05:20.00  +09:02:30.00  XTE J1906+09          ACIS-I NONE  15.00

===================================================================================

Proposal Number: 04400381            
Proposal Title: X-RAY QUIESCENT COUNTERPARTS OF THE GLOBULAR CLUSTER TRANSIENTS

PI: RUDY WIJNANDS                  
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to study the quiescent X-ray counterparts of bright neutron
star X-ray transients in several Galactic globular clusters. The relatively
well-known distances to those clusters make them excellent targets to study the
properties of their quiescent neutron star systems. Previous Chandra observations
of the clusters caught the transient systems in outburst, providing sub-arcsecond
positions for those transients and allowing immediate X-ray identification of
their quiescence counterparts. We will also obtain excellent data on the
low-luminosity X-ray source population of the target globular clusters which we
will use in our ongoing efforts to determine the nature of these sources.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:48:05.20  -24:46:49.00  TERZAN 5              ACIS-S NONE  40.00
 17:48:52.20  -20:21:32.00  NGC 6440              ACIS-S NONE  25.00

===================================================================================

Proposal Number: 04400390            
Proposal Title: LOCALIZING THE NEUTRON STAR X-RAY TRANSIENT EXO 1747-214

PI: JOHN TOMSICK                   
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to use Chandra to localize the neutron star X-ray transient
EXO 1747-214 in quiescence to facilitate its identification in a deep IR image we
have obtained. We plan to perform follow-up IR and optical observations to
determine the source distance, the binary orbital parameters and the neutron star
mass. Low column density, which is important for soft X-ray and optical
observations, was a main consideration in source selection. We derive an upper
limit of 8 kpc on the source distance from the X-ray burst flux observed by
EXOSAT. A Chandra detection is likely since a non-detection will provide a
luminosity upper limit of 6E31 erg/s, which would be unusually low for a neutron
star system.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:50:25.30  -21:25:21.70  EXO 1747-214          ACIS-S NONE  25.00

===================================================================================

Proposal Number: 04400392            
Proposal Title: DIAGNOSING THE ACCRETION FLOW GEOMETRY OF A GALACTIC BLACK HOLE
IN OUTBURST WITH CHANDRA

PI: WALTER LEWIN                   
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to study the accretion flow geometry of a Galactic black
hole in outburst using the Chandra HETGS. Models for the accretion flow geometry
in Galactic black holes make different predictions which can be tested with high
resolution spectroscopy. We will build on the recent successes of this program --
including the detection of broad Fe K lines likely shaped by Doppler shifts and
strong gravity, and narrow absorption lines in an outflowing disk atmosphere --
by obtaining spectra with improved sensitivity. We request a total of 200 ksec (4
obs. of 50 ksec; 1 ``fast'' TOO and 3 follow-ups) for this Chandra study. We will
support these observations with simultaneous RXTE and Integral observations, and
with radio and optical observations from approved programs around the globe.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            TOO                   ACIS-S HETG  50.00
                            TOO                   ACIS-S HETG  50.00
                            TOO                   ACIS-S HETG  50.00
                            TOO                   ACIS-S HETG  50.00

===================================================================================

Proposal Number: 04400494            
Proposal Title: PROBING THE ACCRETION GEOMETRY OF A QUIESCENT BLACK HOLE

PI: ROBERT HYNES                   
Subject Category: BH AND NS BINARIES                                

Abstract: Advective accretion is invoked to explain low luminosity accretion onto
both stellar mass and supermassive black holes. There has been much theoretical
activity, and controversy, but observational constraints are weak. We have found
considerable X-ray and optical variability. The similarity of timescales and
amplitudes, and the emission line kinematics all suggest that the optical
variability is driven by X-ray illumination of the accretion disc. We now propose
the first simultaneous X-ray and optical observations to test if the variations
are correlated and measure relative amplitudes. Our program will yield new
constraints upon the models, as the strength of the optical emission line
response is sensitive to the unobservable EUV spectrum, and to the X-ray emission
geometry.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:24:03.80  +33:52:02.10  V404 CYG              ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04400516            
Proposal Title: THE FAINTEST 'FIELD' LOW-MASS X-RAY BINARIES

PI: MICHIEL VAN DER KLIS           
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to continue our survey, begun in Cycle 1, of the group of
persistently faint galactic X-ray sources outside globular clusters which are
thought to be LMXBs, but about which very little was known before Chandra. Our
exploratory Cycle 1 work confirmed the low Lx of these objects, and produced some
intriguing new results which we will follow up with observations approved in
Cycle 3. Given theoretical as well as empirical arguments for the detection of
spectral lines, in Cycle 4 we propose follow-up ACIS-S CC observations for 2
sources, and 1 deep imaging observation. Our aim is to extend knowledge about
compact-object accretion physics towards lower accretion levels than previously
accessible and to provide a sample against which to compare the faint
globular-cluster LMXBs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:38:17.10  -26:59:38.60  1735-269              ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04400555            
Proposal Title: FINDING BLACK HOLES AND UNDERSTANDING STAR CLUSTER EVOLUTION
WITH CHANDRA

PI: SIMON PORTEGIES ZWART          
Subject Category: BH AND NS BINARIES                                

Abstract: The Large Magellanic Cloud contains an interesting population of star
clusters with a range in ages (~< 100 Myr), richnesses (10^4 to 10^5 stars), and
densities (up to 10^4 star/pc^3) unlike any clusters in the Milky Way. Recent
theoretical models predict these clusters to be unusually rich in black-hole
X-ray binaries (BHXBs); they are at an age when BHs have formed but have not yet
been expelled. We propose to observe six such clusters (in 4 pointings of 30 ks
each) to a detection threshold of 1.5 times 10^32 erg/s (a sensitivity about 1000
times better than current limits). The wide parameter ranges of the selected
clusters will allow us to put important constraints on dynamical models of star
clusters and on the theoretical predictions concerning the formation and
evolution of BHXBs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:08:44.00  -68:45:36.00  NGC 1850 A/B          ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04400554            
Proposal Title: A CHANDRA SNAPSHOT OBSERVATION OF AX J1226.8--6249: A HIGH MASS
X-RAY BINARY PRODUCING A BOW-SHOCK NEBULA ?

PI: STEPHEN EIKENBERRY             
Subject Category: BH AND NS BINARIES                                

Abstract: We propose a 3-kilosecond ACIS-S observation toward the unidentified
X-ray source AX J1226.8-6249. This object is located close to a newly discovered
mid-infrared bow-shock nebula, and we find that it is highly probable that AX
J1226.8-6249 is in fact a Be/X-ray runaway binary, producing a bow shock via its
supersonic motion. Our proposed ACIS-S observation will enable us to estimate the
position of the source with arcsecond accuracy, which will be crucial to
understanding the nature of the source by determining the validity of the
Be/X-ray binary hypothesis and the origin of the bow shock. If confirmed, AX
J1226.8-6249 will be the first Be/X-ray binary observed with a bow shock, and
only the second bow shock system (after Vela X-1) from all high-mass X-ray
binaries.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:26:52.80  -62:49:07.00  AX J1226.8-6249       ACIS-S NONE   3.00

===================================================================================

Proposal Number: 04400563            
Proposal Title: UNDERSTANDING THE EXTENDED EMISSION IN CYGNUS X-3

PI: WILLIAM HEINDL                 
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to observe the microquasar Cyg X-3 during a low X-ray state
in order to study extended, jet-like emission which we have discovered in
archival ACIS-S/HETG observations. Cyg X-3 is a binary system with a neutron star
or black hole primary and a Wolf-Rayet companion. By using the ACIS-S without
gratings, we will obtain a CCD spectrum of the extension. In order to understand
the nature of the extension, we will measure the continuum shape and search for
reflected emission lines from the intense Wolf-Rayet stellar wind. A second
observation with the HRC-I will provide the highest angular resolution possible
with Chandra, allowing us to study the extension close to the compact object
(where the ACIS image will be severely piled up) where matter may be ejected from
the system.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:32:25.50  +40:57:27.70  CYG X-3               HRC-I  NONE  15.00

===================================================================================

Proposal Number: 04400587            
Proposal Title: PURSUING HINTS OF MULTIPLICITY IN M31 GLOBULAR CLUSTER BO 375

PI: ALBERT KONG                    
Subject Category: BH AND NS BINARIES                                

Abstract: Bo 375 in M31 contains one of the most luminous ($2-5 \times 10^{38}$
erg s$^{-1}$) globular cluster X-ray sources in the Local Group. In a recent
ACIS-S survey, we discovered that the source may be extended. We request one 5
ksec HRC-I observation to test whether the source can be resolved and one 10 ksec
observation with ACIS-S to study its spectrum, which is heavily piled up in the
survey data. The observations we propose will help determine if Bo 375 houses
multiple bright sources and will provide input for physical models. We also
request HST observations (1 orbit) to study the morphology of the cluster.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:45:45.60  +41:39:45.20  BO 375                HRC-I  NONE   5.00

===================================================================================

Proposal Number: 04400674            
Proposal Title: CYGNUS X-1: X-RAY DIPS, DISTANCE, AND THE X-RAY HALO

PI: KATJA POTTSCHMIDT              
Subject Category: BH AND NS BINARIES                                

Abstract: We propose a 50 ks HETG observation of the soft X-ray halo of Cyg X-1.
The 0th order image of Cyg~X-1 will be blocked out (to avoid telemetry
saturation). The observation will be scheduled during upper conjunction of the
black hole, when pronounced soft X-ray absorption dips occur. Measurements of
such flux variability mirrored at different annuli of the halo will place
constraints on the distance and extent of the scattering dust cloud, as well as
cross-check existing distance determinations for Cyg X-1 itself. The HETG
spectrum of Cyg X-1 can be expected to show signatures of the widely unknown
focused stellar wind of the O-star that is responsible for the absorption dips.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:58:21.70  +35:12:06.30  CYG X-1               ACIS-S HETG  50.00

===================================================================================

Proposal Number: 04400676            
Proposal Title: RESOLVING THE LOW/HARD STATE OF CYGNUS X-1 WITH CHANDRA

PI: WALTER LEWIN                   
Subject Category: BH AND NS BINARIES                                

Abstract: Galactic black holes with relativistic radio jets are called
microquasars. These systems are seen at high inclination, partially obscuring
their central accretion engine. Cygnus X-1 is seen relatively face-on; it might
be regarded as a micro-Seyfert-1, and this may explain why a broad Fe K-alpha
emission line consistent with emission from the inner disk is often observed in
this source. We request a 60 ksec HETGS observation of Cygnus X-1 in the low/hard
state to diagnose its accretion flow geometry in this state through precise Fe K
alpha line spectroscopy. We will examine the nature of the companion wind via
highly ionized absorption lines, to constrain its role in feeding the central
engine. We will make simultaneous RXTE (2-250 keV) and Integral (3 keV - 10 MeV)
observations.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:58:21.70  +35:12:05.80  CYGNUS X-1            ACIS-S HETG  60.00

===================================================================================

Proposal Number: 04400771            
Proposal Title: THE ULTRALUMINOUS X-RAY SOURCE IN HOLMBERG II

PI: PHILIP KAARET                  
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to a program of Chandra and HST observations to test the
recent suggestion that the bright X-ray source in Holmberg II is surrounded by a
photoionization nebula powered by a central object with a luminosity of order
10^40 erg/s.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:19:29.70  +70:42:19.40  HOLMBERG II ULX       HRC-I  NONE   5.00

===================================================================================

Proposal Number: 04400900            
Proposal Title: DUSTY SHOCKS AND PULSAR WINDS: IDENTIFYING THE SOURCE MODEL FOR
G70.7+1.2

PI: ZAVEN ARZOUMANIAN              
Subject Category: BH AND NS BINARIES                                

Abstract: The optical and radio nebula G70.7+1.2 has been the object of scrutiny
and speculation for more than 50 years. In the last decade, unexpected
discoveries made through multiwavelength observations have helped to discredit
successive models of the object's nature and the mechanisms at work within it.
Two models that explain most of the observed phenomena remain, one requiring a
central Be-neutron star binary, the other a single star with a dusty wind. They
make specific, distinct predictions for X-ray emission from the system. We
propose to use the sensitivity and spatial resolution of Chandra's ACIS-S camera
to discriminate between these two models, revealing at last the true nature of
G70.7+1.2, and providing a unique new laboratory for testing models of bow-shock
formation.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:04:23.60  +33:39:04.00  G70.7+1.2             ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04400812            
Proposal Title: A SEARCH FOR X-RAY EMISSION FROM OGLE-1999-BUL-32: THE "MISSING
LINK" BETWEEN STELLAR MASS AND SUPERMASSIVE BLACK HOLES

PI: W. THOMAS VESTRAND             
Subject Category: BH AND NS BINARIES                                

Abstract: Straightforward interpretation of the spectacular new microlensing
event OGLE-1999-BUL-32 indicates that the lens is either a 130 solar mass black
hole at 500 pc or a 30 solar mass black hole at 6 kpc. We request a 50-ksec ACIS
observation that will yield a limiting X-ray sensitivity which is more than two
orders of magnitude deeper than the best existing limits. If detected, the
observations would be powerful evidence for a class of isolated black holes with
masses between those of stellar mass in X-ray binary systems and the supermassive
black holes resident in the nuclei of galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:05:05.30  -28:34:42.50  OGLE-1999-BUL-32      ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04400831            
Proposal Title: QUIESCENT EMISSION FROM TRANSIENT ACCRETION-POWERED PULSARS

PI: LARS BILDSTEN                  
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to study the quiescent emission from transiently accreting
X-ray pulsars. Reactions in the neutron star (NS) crust maintain the core at a
temperature sufficient to make the NS emit a minimum thermal luminosity
comparable to that observed in low-B transients; thus, we will detect sources in
quiescence for the first time, at predicted fluxes. Using magnetic atmosphere
models, we will measure the implied emission area radii, to compare with those
measured from low-B transients. We will search for pulsations at the known
periods, to constrain the fraction of the quiescent luminosity contributed by
surface thermal emission, and spectrally disentangle the thermal emission from
other emission mechanisms, such as accretion onto the NS magnetosphere.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:20:57.20  -61:55:00.30  A1118-616             ACIS-S NONE  20.00
 11:48:00.00  -62:12:24.90  4U 1145-619           ACIS-S NONE  23.00

===================================================================================

Proposal Number: 04400982            
Proposal Title: X-RAY TRANSMISSION SPECTROSCOPY DURING THE STAR-RISE OF HER X-1

PI: MARIO JIMENEZ-GARATE           
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to observe Her X-1 at the time in which the neutron star
rises above the edge of the accretion disk. This phenomenon is due to disk
precession. The enhanced line-of-sight optical depth from the disk atmosphere and
corona will allow the detection of absorption edges and/or resonance lines, from
species such as N VII, O VIII, Ne X, Mg XII, SI XIV, and Fe XXV, which we can use
to determine the disk ionization structure, the elemental composition, the gas
dynamics, and column density. The pre-rise and post-rise epochs likely exhibit
line features from the disk and corona, and are best to search for P Cygni
profiles from an equatorial disk-wind.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:57:50.50  +35:20:52.00  HER X-1               ACIS-S HETG  30.00
 16:57:50.50  +35:20:52.00  HER X-1               ACIS-S HETG  30.00

===================================================================================

Proposal Number: 04400983            
Proposal Title: EXPLORING ACCRETION DISKS: THE LINE-RICH SPECTRA OF X-RAY BINARY
DIPPERS

PI: MARIO JIMENEZ-GARATE           
Subject Category: BH AND NS BINARIES                                

Abstract: We propose to obtain HETG spectra for two low-mass X-ray binary (LMXB)
dippers, which likely exhibit prominent emission lines. Observations during the
dip (or absorbed) phases, are equivalent to taking a "disk-coronagraph", which
allows us to probe any circumsource structure. Using high-resolution
spectroscopy, we can determine element abundance ratios, density, temperature,
and measure emission-line profiles. With 4U1254-69 and 4U1323-619, we will
complete the observed sample of bright, high-inclination LMXB, which will advance
our understanding of their accretion disks.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:57:37.20  -69:17:21.00  4U1254-690            ACIS-S HETG  55.00

===================================================================================

Proposal Number: 04400876            
Proposal Title: SNAPSHOT SURVEY OF FOUR LMXBS

PI: DEEPTO CHAKRABARTY             
Subject Category: BH AND NS BINARIES                                

Abstract: We request short snapshot observations of four LMXBs with ACIS/HETGS to
further three independent science investigations. (1) We will measure the
spectrum of 4U1822-000 and 4U1905+000 to test the hypothesis that they are
ultracompact binaries. (2) We will measure the position of the X-ray burster
4U1702-429 in order to facilitate identification of its optical counterpart. (3)
We will measure the position of the suspected symbiotic X-ray binary 4U1700+24 in
order to test its association with a nearby red giant. In all four cases, we will
combine our Chandra analysis with existing or approved ground-based optical/IR
observations.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:25:22.00  +00:04:14.10  4U 1822-000           ACIS-S HETG   2.00
 19:08:27.00  +00:10:07.60  4U 1905+000           ACIS-S HETG   5.00

===================================================================================

Proposal Number: 04400014            
Proposal Title: NEUTRON STARS IN QUIESCENCE

PI: STEPHEN MURRAY                 
Subject Category: BH AND NS BINARIES                                

Abstract: In order to distingush the effects of an event horizon associated with
a black hole from a surface associated with a neutron star, we must compare their
X-ray luminosities when in quiescence. Very few neutron star binaries have been
detected, we plan to remedy this.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:03:54.00  -77:53:06.00  SAX J1603.9-7753      ACIS-S NONE  16.00
 17:09:50.40  -26:37:06.70  XTE J1709-267         ACIS-I NONE  24.00
 17:14:19.20  -34:02:58.00  2S1711-339            ACIS-S NONE  25.00
 17:48:13.40  -36:07:53.00  A1744-361             ACIS-S NONE  16.00
 17:58:40.00  -33:48:27.00  4U1755-33             ACIS-S NONE  24.00

===================================================================================

Proposal Number: 04400991            
Proposal Title: ``QPO-FOLDED'' SPECTROSCOPIC OF THE LOW-MASS X-RAY BINARY AND
DIPPER 4U 1323-62

PI: MARIANO MENDEZ                 
Subject Category: BH AND NS BINARIES                                

Abstract: We will use Chandra's ACIS-S detector in combination with the HETGS to
do phase-resolved spectroscopy of the low-mass X-ray binary and dipper 4U
1323-62. Using the 1-Hz QPO that we recently discovered in this source we will
construct ``QPO-folded'' light curves to study separately spectra from different
QPO-phase intervals. We will correlate the presence/absence of emission and
absorption features in the energy spectrum of Chandra with timing properties
measured both by Chandra, and (already approved) simultaneous RXTE observations.
This should help us determine how timing properties depend on mass accretion
rate, and whether mass flows onto the central object through different channels
of accretion.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:26:36.10  -62:08:10.00  4U 1323-619           ACIS-S HETG  40.00

===================================================================================

Proposal Number: 04400096            
Proposal Title: SOFT X-RAY EMISSION FROM X-RAY BINARIES

PI: MARIANO MENDEZ                 
Subject Category: BH AND NS BINARIES                                

Abstract: We will use Chandra's LETG/HRC-S to observe the neutron star binary EXO
0748-676 and the black-hole candidate Cyg X-1. We will correlate the
presence/absence of emission and absorption features in the energy spectrum of
Chandra with timing properties measured both by Chandra, and simultaneous RXTE
observations.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:48:33.30  -67:45:00.00  EXO 0748-676          HRC-S  LETG  40.00

===================================================================================

Proposal Number: 04400159            
Proposal Title: FAINT NEUTRON STAR SOFT X-RAY TRANSIENTS IN QUIESCENCE

PI: PETER JONKER                   
Subject Category: BH AND NS BINARIES                                

Abstract: It has been proposed that the magnetic fields of faint soft X-ray
transients (SXTs) are not buried by the accreted matter. This would explain why
SAX J1808.4-3658 shows pulsations and brighter SXTs don't. So far the only
property separating SAX J1808.4-3658 from other SXTs is its low quiescent
luminosity. Therefore, a quiescent luminosity as low as that of SAX J1808.4-3658
may be the tell-tale sign of systems showing pulsations when matter is accreting.
We propose to obtain ACIS-S observations of two faint SXTs in quiescence. These
observations will show whether the quiescent luminosity of the faint neutron star
SXTs is indeed lower than those of bright neutron star SXTs such as e.g. Cen X-4.
To achieve this the low interstellar absorption toward the selected sources is
important.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:10:44.40  -26:08:60.00  SAX J1810.8-2609      ACIS-S NONE  35.00

===================================================================================

Proposal Number: 04408136            
Proposal Title: AN HETGS OBSERVATION OF GX 339-4 IN THE LOW/HARD STATE:
ACCRETION GEOMETRY, RELATIVITY, AND JET FORMATION

PI: JON MILLER                     
Subject Category: BH AND NS BINARIES                                

Abstract: [The full SJ is contained in an email to the director.] A sensitive
spectrum of a transient Galactic black hole in the low/hard state can address at
least 3 of the most fundamental issues in X-ray astronomy: 1) major pictures for
changes in accretion flow geometry with the mass accretion rate (m-dot), 2)
relativistic effects near black holes, and 3) jet formation. GX 339-4 is an ideal
target for this purpose. At present, grating spectra and even CCD spectra
obtained from sources in this state have collected < 10^4 counts each (in the
best cases), insufficient for strong constraints. Our proposed grating
observation will obtain appx 10^6 counts in the dispersed spectrum. We will use
continuum spectroscopy and the shape of the Fe K-alpha line to constrain the
radial location of the inner disk, and thereby the nature of the flow geometry
and the role of the disk in jet formation in the low/hard state.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:02:49.50  -48:47:23.00  GX 339-4              ACIS-S HETG  75.00

===================================================================================

Proposal Number: 04408138            
Proposal Title: THE BHC SOFT X-RAY TRANSIENT XTE J1908+094 RETURNING TO
QUIESCENCE

PI: PETER JONKER                   
Subject Category: BH AND NS BINARIES                                

Abstract: With the Chandra satellite we can study the spectra of SXTs as they
fade into quiescence. This has never been done for a BHC SXT! According to
evolutionary and SXT outburst theories there may exist a whole class of
persistent but faint accreting BHCs at low Mdot; their accretion disk is cold and
hence not prone to the SXT outburst mechanism. Up to now there is very few
information on spectral states for BHCs for ~2 orders of magnitude in flux
(~10^-7-10^-5 Edd.; there is spectral information of BHCs in quiescence at ~10^-8
of Edd.). Gallo et al. 2003 have demonstrated the existence of a universal
coupling between observed X-ray and radio flux from hard state BHCs, of the form
L_radio~L_X^0.7, over three orders of magnitude. We propose to extend this
relation down to ~5x10^-7 Edd. assuming d=10 kpc. This would demonstrate that jet
production is the standard behavior and it is only in the limited range in Mdot
in which a standard thin disc is formed that a jet is not produced.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:08:53.80  +09:23:04.90  XTE J1908+094         ACIS-S NONE   5.00
 19:08:53.80  +09:23:04.90  XTE J1908+094         ACIS-S NONE  10.00
 19:08:53.80  +09:23:04.90  XTE J1908+094         ACIS-S NONE  15.00

===================================================================================

Proposal Number: 04408141            
Proposal Title: DETERMINATION OF THE POSITION OF THE MILLISECOND PULSAR XTE
J1807-294

PI: CRAIG MARKWARDT                
Subject Category: BH AND NS BINARIES                                

Abstract: Millisecond pulsars are probably the endpoint of evolution of low mass
X-ray binaries (LMXBs). However, the actual detection of neutron star spin
frequencies in LMXBs has been problematic. To date, four accreting millisecond
pulsars have been found, with the fourth, XTE J1807-294 having been discovered 25
Feb 2003. Three of the four known pulsars have orbital periods of 35-43 min,
which suggests that there is a common evolutionary origin. We request Chandra
HRC-S observations in "Imaging Mode" primarily to determine the position. This
will enable observations at other wavelengths. Detection of an optical
counterpart of XTE J1807-294, in outburst or quiescence, can aid in determining
the system size and inclination, but because of the confused galactic center
region, it is important to have a precise a priori position.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:07:00.34  -29:24:18.32  XTE J1807-294         HRC-S  NONE   3.00



***********************************************************************************
SN, SNR AND ISOLATED NS                           
--------------------------------------------------

===================================================================================

Proposal Number: 04500003            
Proposal Title: THE ORIGIN OF GAMMA-RAY BURSTS

PI: ANDREW FRUCHTER                
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The rapid and accurate localization of gamma-ray bursts (GRBs) promised
by a working HETE-2 during the coming year may well revolutionize our ability to
study these enigmatic, highly luminous transients. We propose a program of HST
and Chandra observations to capitalize on this extraordinary opportunity. We will
perform some of the most stringent tests yet of the standard model, in which GRBs
represent collimated relativistic outflows from collapsing massive stars. NICMOS
imaging and STIS CCD spectroscopy will detect broad atomic features of supernovae
underlying GRB optical transients, at luminosities more than three times fainter
than SN 1998bw. Chandra spectroscopy will investigate whether the GRB X-ray lines
are from metals freshly ripped from the stellar core by the GRB.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            GRB                   ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04500008            
Proposal Title: SNR E0102-72: COMPLETING THE PICTURE

PI: CLAUDE CANIZARES               
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Chandra HETG observations of the SNR E0102-72 in the SMC reveal ejecta
velocities of ~1000 km/sec and suggest pregressive ionization due to the reverse
shock. These data have allowed us to generate a velocity map of the SNR, a
crucial ingredient for creating a model of the 3D structure of the remnant. By
observating the SNR at a second roll roughly orthogonal to the first, we will be
able to complete this velocity map and refine our 3D model. Further, we will be
able to extend our examination of the ionization structure and the radial profile
at the reverse shock front.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:03:60.00  -72:01:56.00  1E0102.2-7219         ACIS-S HETG 140.00

===================================================================================

Proposal Number: 04500018            
Proposal Title: MONITORING THE BIRTH OF SUPERNOVA REMNANT SNR1987A

PI: DAVID BURROWS                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: SNR1987A presents a unique opportunity to observe the birth and early
evolution of a supernova remnant at high spatial resolution. Chandra affords the
opportunity to monitor the expansion and evolution of this remnant with high
resolution X-ray images and spatially-resolved spectra. This proposal continues
our program of regular observations of SNR1987A. We propose two 50 ks monitoring
observations in AO4, spaced 6 months apart, to study the interaction of the blast
wave with the circumstellar ring/disk.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:35:28.00  -69:16:11.10  SNR1987A              ACIS-S NONE  25.00
 05:35:28.00  -69:16:11.10  SNR1987A              ACIS-S NONE  50.00
 05:35:28.00  -69:16:11.10  SNR1987A              ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04500034            
Proposal Title: SIMULTANEOUS X-RAY AND OPTICAL HIGH SPEED PHOTOMETRY OF THE CRAB
PULSAR

PI: PETER PREDEHL                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose to obtain contemporaneous X-ray and Optical observations of
the Crab pulsar in order to determine the relative phase between the X-ray and
optical pulses. Optical observations will be performed at Skinakas observatory of
the university of Crete, Greece, using MPE's high speed optical photometer OPTIMA
which provides an absolute time accuracy of 2-4 microseconds. In the HRC-S timing
mode which we plan to use the accuracy to measure the X-ray pulse arriv l time is
100 microseconds. This is the first experiment which aims to determine the
relative phase between the optical and X-ray wave bands.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:34:32.00  +22:00:52.00  CRAB PULSAR           HRC-S  LETG  10.00

===================================================================================

Proposal Number: 04500051            
Proposal Title: OBSERVATION OF SNR G11.4-0.1

PI: GORDON GARMIRE                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: X-ray study of a distant SNR to explore whether a shell or comppsite
remnant.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:10:47.00  -19:04:60.00  G11.4-0.1             ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04500062            
Proposal Title: ALTERNATE-PSR J1509-5850 : "VELA-LIKE" PULSAR FOUND IN THE
PARKES MULTIBEAM PULSAR SURVEY

PI: GORDON GARMIRE                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The goal of this observation is to measure the X-ray spectrum of PSR
J1509-5850 and detect its Pulsar Wind Nebula.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 15:09:27.10  -58:50:56.00  PSR J1509-5850        ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04500141            
Proposal Title: A DETAILED STUDY OF 3C58 - THE YOUNGEST KNOWN PULSAR NEBULA IN
THE GALAXY

PI: PATRICK SLANE                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: 3C58 is the youngest known Crab-like SNR in the Galaxy. Chandra
observations have uncovered its young pulsar, provided an upper limit to its
surface temperature which challenges standard models of NS cooling, and
identified the termination shock of its wind. Structures in the nebula indicative
of jets and particle outflows have also been revealed. 3C58 thus possesses all of
the standard traits of a young pulsar system, and may be a more appropriate
"prototype" than the Crab. Based on the foundation built from our initial
studies, we propose a definitive X-ray study of 3C58 to study structure on scales
of the telescope resolution, perform spectral mapping of the complex emission
regions, and obtain a template for future studies of this remnant of SN 1181 at
other wavelengths.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:05:37.90  +64:49:41.76  3C58                  ACIS-S NONE 150.00
 02:05:37.90  +64:49:41.76  3C58                  ACIS-S NONE  50.00
 02:05:37.90  +64:49:41.76  3C58                  ACIS-S NONE 150.00

===================================================================================

Proposal Number: 04500164            
Proposal Title: MULTI-EPOCH OBSERVATIONS OF PSR B1509-58 AND ITS NEBULA

PI: BRYAN GAENSLER                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Chandra observations of the Crab and Vela pulsars have revealed many
remarkable and unexpected features in their nebulae, allowing us to make major
progress in our understanding of pulsar winds. Our AO-1 observations of the young
pulsar PSR B1509-58 show it to power a large and bright nebula containing many
complex features, demonstrating this source to be the obvious next target worthy
of detailed study. We therefore propose Chandra observations of PSR B1509-58 at
four additional epochs, with the aim of measuring changes in the brightness,
morphology and position of the nebular features as a function of time. These data
will allow us to make detailed comparisons to our proposed models for the
time-dependent evolution of the pulsar's wind.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 15:13:55.60  -59:08:09.20  PSR B1509-58          ACIS-I NONE   9.62
 15:13:55.60  -59:08:09.20  PSR B1509-58          ACIS-I NONE   9.62
 15:13:55.60  -59:08:09.20  PSR B1509-58          ACIS-I NONE  19.25

===================================================================================

Proposal Number: 04500172            
Proposal Title: IMAGING AND SPECTROSCOPY OF THE PULSAR EXPECTED IN CTA1

PI: JULES HALPERN                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The supernova remnant CTA1 that falls within the error box of the EGRET
source 3EG J0010+7309 contains one of the best X-ray candidates for a radio-quiet
gamma-ray pulsar. The superb imaging capability of Chandra can resolve the
neutron star in the X-ray source RX J0007.0+7303 from its pulsar wind nebula
(PWN), thus enabling a simultaneous study of the structure of the PWN, and the
energetics of both thermal and nonthermal spectra from the pulsar itself. These
results should motivate follow-up observations, as Chandra has done before, that
may finally discover the pulsations. We have also obtained deep images of this
field in B, V, and R, that can be used to search for the optical counterpart of
the pulsar once the precise X-ray position is determined by Chandra.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:07:00.00  +73:03:03.00  RX J0007.0+7303       ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04500174            
Proposal Title: REVEALING THE PULSAR COUNTERPARTS OF EGRET SOURCES

PI: JULES HALPERN                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Empowered by the superb imaging performance of Chandra, we are making
good progress in determining the nature of the persistent high-energy gamma-ray
sources in the Galaxy. Young pulsar counterparts are being found directly by
resolving point sources within synchrotron nebulae to distances of 2-4 kpc, where
the most luminous EGRET sources reside. At intermediate Galactic latitudes,
precise Chandra astrometry is establishing the existence of nearby, older neutron
stars, by the absence of optical counterparts. Following our successes using both
of these methods, we propose to pinpoint a set of previously studied candidates,
which will make a significant addition to the population of young, energetic
pulsars, and/or nearby older neutron stars that are also efficient gamma-ray
pulsars.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:35:40.00  +42:22:60.00  GEV J2035+4214        ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04500223            
Proposal Title: STUDYING HIGH MACH NUMBER SHOCKS IN YOUNG SUPERNOVA REMNANTS
WITH CHANDRA

PI: JOHN HUGHES                    
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose deep imaging of the full extents of the young supernova
remnants SN1006, Tycho, and G292.0+1.8. These images are optimized for proper
motion measurements for which Chandra's superb angular resolution is uniquely
suited and will yield significant results when compared to earlier Chandra,
ROSAT, and Einstein images. The new X-ray data, in conjunction with our new radio
observations, will address questions concerning the physics of
ultra-high-Mach-number collisionless shocks, the efficiency of cosmic-ray
acceleration, the dynamics of ejecta-dominated SNRs, and the small-scale
structure of SN ejecta. These observations will serve as a legacy of the Chandra
mission and will provide invaluable data for future research on SNRs and cosmic
rays.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:25:19.00  +64:08:10.00  TYCHO'S SNR           ACIS-I NONE 150.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00
 15:02:55.00  -41:55:30.00  SN1006                ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04500227            
Proposal Title: SUPERNOVA REMNANT(S) AND STAR-FORMING REGIONS IN THE W51 COMPLEX

PI: BON-CHUL KOO                   
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: W51B+C is one of the few regions in the Galaxy where we can study the
formation of massive stars and the consequence of their violent explosions
simultaneously. It is composed of an active star forming region, W51B, and an old
SNR, W51C. There is strong evidence suggesting that the SNR is interacting with
the star-forming molecular clouds. We propose 2 short pointings at the central
region of the SNR to search for pulsars and evaporating molecular clumps. A third
pointing at the adjacent star-forming region W51B will locate stellar X-ray
sources, and will distinguish the X-rays associated with the star-forming region
from the X-rays associated with the SNR.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:22:28.00  +14:04:60.00  W51B                  ACIS-I NONE  30.00
 19:22:60.00  +14:15:00.00  W51 NORTH             ACIS-I NONE  12.00
 19:23:30.00  +14:04:60.00  W51 SOUTH             ACIS-I NONE  12.00

===================================================================================

Proposal Number: 04500228            
Proposal Title: THE X-RAY NEBULA OF PSR B1046-58

PI: VICTORIA KASPI                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Pulsar wind nebulae (PWNe), well studied with Chandra, are a result of
confinement of the relativistic wind produced by rotation-powered pulsars. In
sources studied thus far, confinement is by either the high pressure in the
interior of a supernova remnant, or of ram-pressure due to the pulsar velocity
and ambient density. Here we request 36~ks of ACIS time to study the PWN around
the young, energetic pulsar PSR B1046-58. This PWN, according to basic reasoning,
should not exist, as there is no obvious wind confinement mechanism. Yet ASCA
observations reveal a relatively bright nebula. Using Chandra's high spatial
resolution, we will, for the first, time, resolve the features in this PWN, in
order to solve the mystery and determine how this PWN is produced.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 10:48:12.20  -58:32:05.80  PSR B1046-58          ACIS-S NONE  36.00

===================================================================================

Proposal Number: 04500301            
Proposal Title: A JET-CLOUD INTERACTION IN W50: THE GALACTIC MICRO-QUASAR
ASSOCIATED WITH SS 433

PI: SAMAR SAFI-HARB                
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: W50 is the only Galactic supernova remnant known to harbor a binary
twin-jet compact object: SS 433. Our study of this fascinating SNR reveals two
X-ray lobes having a knotty morphology. In the western lobe, we have evidence
(from a multiwavelength campaign) of a cloud interacting with SS433's receding
jet. We propose a 75 ksec ACIS-I pointing at the peak of W50-west to 1) spatially
resolve thermal and non-thermal emission in the shock-excited regions, and 2)
search for arcsecond-scale shock structures expected from the deposition of
energy of a fast moving jet into a cloud. Chandra will provide an exquisite image
and a good understanding of a Galactic micro-quasar, whose study provides a
bridge from the smallest scale nebulae to the extragalactic radio jets.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:09:45.00  +05:01:29.00  W50-WEST              ACIS-I NONE  75.00

===================================================================================

Proposal Number: 04500320            
Proposal Title: SUPERNOVA REMNANTS: HOMES FOR YOUNG NEUTRON STARS

PI: DAVID HELFAND                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Composite supernova remnants are the expected products of Type II
supernovae, yet they comprise less than 15% of the known remnants in the Galaxy.
The range of synchrotron core parameters provide a crucial window on the physics
of stellar collapse, while the surrounding shell offers an age estimate as well
as an assay of the elements produced in the explosion. G16.7+0.1 & G351.2+0.1 are
small-diameter composite remnants containing weak radio cores; the former has
recently been detected with XMM, while mid-infrared observations of the latter
show that its inverted radio spectral index extends at least to 20 microns. We
propose to observe both remnants in order to define the nature of their pulsar
wind nebulae and to constrain the parameters of the neutron stars which power
them.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:22:24.70  -36:10:60.00  G351.2+0.1            ACIS-S NONE  15.00
 18:20:57.80  -14:20:09.60  G16.7+0.1             ACIS-S NONE  25.00

===================================================================================

Proposal Number: 04500326            
Proposal Title: A STUDY OF THE X-RAY LUMINOUS NORTHWESTERN RIM OF THE GALACTIC
SUPERNOVA REMNANT G266.2-1.2

PI: THOMAS PANNUTI                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: G266.2-1.2 is a young shell-type supernova remnant with an X-ray
spectrum dominated by non-thermal emission. Previous X-ray studies of this
remnant by ASCA and ROSAT revealed that the northwestern rim of G266.2-1.2 is
particularly luminous, but these observations lacked the capability of resolving
this rim and the true nature of the rim's spectrum (thermal or non-thermal) has
been debated. To investigate this rim in more detail, we propose to conduct a
high-resolution observation using Chandra. it is very likely that the rim is a
site of cosmic-ray acceleration, and the data will be analyzed to study this
phenomenon in detail. We will also search for thermal emission from smaller
structures within the rim to take advantage of Chandra's unprecedented high
angular resolution capabilities.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:49:07.92  -45:37:44.40  G266.2-1.2 - NW       ACIS-S NONE  35.00
 08:49:07.92  -45:37:44.40  G266.2-1.2 - NW       ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04500278            
Proposal Title: SUPERNOVA REMNANTS IN THE MAGELLANIC CLOUDS

PI: FREDERICK SEWARD               
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Chandra has now observed 20 of the brightest remnants in the Magellanic
Clouds. Because the distances are known and the absorption low, this set is going
to yield definitive data on remnant characteristics and evolution. We propose to
observe 6 more remnants in the LMC. All are fainter and some are larger than
those in the observed sample. We expect to see faint central sources and
previously unobserved structure. These observations will span a region of
parameter space not covered in the presently-observed sample aad will include
some remnants with unique interesting features.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:54:30.00  -67:13:00.00  0454-672 [N9]         ACIS-S NONE  68.00
 05:31:60.00  -71:00:20.00  0532-710 [N206]       ACIS-S NONE  34.00
 05:31:60.00  -71:00:20.00  0532-710 [N206]       ACIS-S NONE  34.00
 05:40:00.00  -69:44:15.00  0540-697              ACIS-S NONE  21.00
 05:50:35.00  -68:20:60.00  0550-683              ACIS-S NONE  68.00

===================================================================================

Proposal Number: 04500351            
Proposal Title: GALACTIC GEV GEMINGAS: POINT SOURCE PARAMETERS AND COMPACT PWN

PI: ROGER ROMANI                   
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose an imaging survey of our newly discovered X-ray counterparts
of Galactic GeV sources. The targets selected have no known radio pulsar
identification, but resemble identified pulsar/wind nebula complexes, with hard
spectra and modest absorption. The ACSA discovery data could not separate the
pulsar point source candidates, make accurate measurements of the flux and
absorption or map the fine structure in the surrounding diffuse emission. Short
ACIS imaging observations efficiently use CXO's sensitivity and resolution to
accomplish all of these goals. These observations will test the pulsar model for
these GeV sources, will set the stage for sensitive pulse searches and will help
us decide if Geminga is unique or the archetype of a new Galactic population.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:25:50.00  -13:00:10.00  GEV J1825-1310        ACIS-I NONE  15.00

===================================================================================

Proposal Number: 04500364            
Proposal Title: OBSERVING THE THERMAL COMPOSITE SNR KES 27

PI: FREDERICK SEWARD               
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: An AO-2 ACIS-I observation of Kes 79 has yielded some unexpected
results, including a central point source with AXP-like spectrum and many
filaments possibly caused by shock-cloud interaction. We propose a 40 ksec ACIS-I
observation to a similar SNR to Kes 79: Kes 27. Kes 27 is a thermal composite SNR
with a number of unusual properties: one of the youngest thermal composites, the
least swept-up mass, limb-brightening at the east and a hard tail above 5 keV.
Two point sources revealed by ROSAT inside the remnant can be candidates for a
central pulsar. With the proposed observation, we will be able to identify an
interior pulsar with any associated nebula, resolve fine structures like
filaments, understand its center-filled morphology, and locate the hard tail.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 15:48:31.50  -53:46:20.00  KES 27                ACIS-I NONE  40.00

===================================================================================

Proposal Number: 04500372            
Proposal Title: X-RAY EMISSION FROM YOUNG RADIO PULSARS DISCOVERED IN THE PARKES
MULTIBEAM SURVEY

PI: DIVAS SANWAL                   
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The young (characteristic age = 10--100 kyr) pulsars represent a
transition group from the very young pulsars, characterized by strong nonthermal
radiation and bright synchrotron pulsar wind nebulae, to the middle aged pulsars,
characterized by the thermal radiation. The investigation of these pulsars allows
us to understand the transition from very young to middle-aged pulsars and
constrain the parameters responsible for pulsar evolution, and potentially detect
the PWN around these pulsars. Therefore, we propose to observe four young pulsars
recently discovered in the Parkes Multibeam Pulsar Survey.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:09:43.20  -19:17:47.00  PSR J1809-1917        ACIS-S NONE  20.00
 19:13:20.30  +10:11:23.00  PSR J1913+1011        ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04500388            
Proposal Title: FREE AT LAST: AN ENERGETIC PULSAR ESCAPES ITS SUPERNOVA REMNANT

PI: FERNANDO CAMILO                
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: PSR J1016-5857 is a young and energetic pulsar located just outside the
supernova remnant (SNR) G284.3-1.8. The morphology of the system argues that the
pulsar has a high space velocity, and has caught up with and now overtaken its
associated SNR. We have identified an EINSTEIN source, which in the above
hypothesis is likely to be a cometary nebula powered by the pulsar. We here
propose a short CHANDRA observation of this X-ray source to determine whether it
is indeed associated with the pulsar. With the resulting morphological data, we
can confirm or refute the pulsar/SNR association, and can probe the pulsar's spin
history and interaction with its environment.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 10:16:21.20  -58:57:12.00  PSR J1016-5857        ACIS-S NONE  19.00

===================================================================================

Proposal Number: 04500442            
Proposal Title: CHANDRA OBSERVATIONS OF THE UNIDENTIFIED GAMMA-RAY SOURCE IN
GAMMA-CYGNI

PI: WERNER BECKER                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The nature of the unidentified gamma-ray source 2CG078+2 in the SNR
G78.2+2.1 is a mystery since its discovery in the mid 70's with COS-B. Although
its gamma-ray emission properties strongly argue for a Geminga-like radio-silent
neutron star, this is not more than a working hypothesis. ROSAT observations of
the remnant have discovered a possible X-ray counterpart in the 20' x 14' arcmin
small EGRET error box. The sparse ROSAT data, however, do not support a detailed
analysis nor do they provide an accurate position. Both are badly needed for
further identification. We propose a 30 ksec ACIS-I observation of RX
J2020.2+4026 to determine its position with sub-arcsec accuracy and to obtain
enough counts for a detailed spectral analysis of this putative gamma-ray
counterpart.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:20:17.00  +40:26:09.00  RX J2020.3+4026       ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04500502            
Proposal Title: TOO OBSERVATIONS OF SOFT GAMMA REPEATERS

PI: PETER WOODS                    
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Soft Gamma Repeaters are rare sources of transient burst emission,
probably magnetars (i.e. strongly magnetized neutron stars). Each of the SGRs has
a persistent X-ray counterpart and some show coherent pulsations. During burst
active phases, these counterparts undergo changes in their energy spectrum and
pulse properties. Measuring the effects of burst activity are diagnostic of the
burst mechanism and their nature in general. In the event of detection of
substantial burst activity from an SGR, we propose to make Chandra ToO
observations of any of the four known sources, SGR 1900+14, SGR 1806-20, SGR
1627-41, SGR 0526-66, the SGR candidate SGR 1801-23, as well as any newly
discovered SGR source.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            Any SGR               ACIS-I NONE   5.00
 19:07:14.30  +09:19:20.10  SGR 1900+14           ACIS-S NONE  20.00
 19:07:14.30  +09:19:20.10  SGR 1900+14           ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04500500            
Proposal Title: PHASE RESOLVED SPECTROSCOPY OF THE VELA PULSAR

PI: GEORGE PAVLOV                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The superb angular resolution of Chandra has allowed us to resolve the
Vela pulsar from its pulsar-wind nebula and prove that the phase-integrated
pulsar spectrum consists of a soft thermal component and a hard magnetospheric
component. The energy-integrated light curve has at least three peaks per period,
whose origin remains unclear. To constrain the properties of the superdense
matter, infer the temperature and magnetic field distributions over the neutron
star surface, and elucidate the mechanisms of the multiwavelength magnetospheric
radiation, we propose an ACIS-S observation of the Vela pulsar. High-quality
phase-resolved spectroscopy and energy-resolved timing of 200,000 pulsar photons
will allow the first detailed comparison with the theoretical models.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:35:20.70  -45:10:35.70  VELA PULSAR           ACIS-S NONE   5.00
 08:35:20.70  -45:10:35.70  VELA PULSAR           ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04500504            
Proposal Title: PROBING THE NATURE OF THE TORQUE VARIABILITY IN SGR 1900+14

PI: PETER WOODS                    
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Soft Gamma Repeaters (SGRs) are sources of transient burst emission,
widely believed to be strongly magnetized neutron stars or magnetars. Each of the
four known SGRs has a persistent X-ray counterpart; two of which show coherent
pulsations and rapid spindown, presumably due to magnetic braking. The infered
torque on SGR 1900+14 has been shown to vary by more than a factor 5,
uncorrelated with the burst behavior. Here, we propose for a sequence of Chandra
observations to simultaneously monitor the flux/spectrum and the torque (through
RXTE/PCA) of SGR 1900+14. Studying the correlated behavior will allow us to
constrain the underlying physical mechanism responsible for the torque in this
system, and thereby, better understand the nature of this source.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:07:14.30  +09:19:20.10  SGR 1900+14           ACIS-S NONE  25.00
 19:07:14.30  +09:19:20.10  SGR 1900+14           ACIS-S NONE  25.00
 19:07:14.30  +09:19:20.10  SGR 1900+14           ACIS-S NONE  25.00

===================================================================================

Proposal Number: 04500584            
Proposal Title: REVEALING THE PULSAR IN SUPERNOVA REMNANT G54.1+0.3

PI: FANGJUN LU                     
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: A recent X-ray observation of the supernova remnant G54.1+0.3 has
revealed a near twin of the Crab Nebula. The basic spectral and morphological
characteristics of G54.1+0.3 mimic those of the Crab Nebula in all respects.
However, pulsation from the central compact source -- the putative pulsar
energizing the nebula, has yet to be found. We propose to search for periodicity
from the central source using the ACIS in the continuum-clocking mode. Detecting
the pulsar will allow us to conduct phase-resolved X-ray spectroscopy and to put
important constraints on the pulsar X-ray emission mechanism and on the
interaction between the pulsar wind and the nebula.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:30:30.10  +18:52:14.10  SNR G54.1+0.3         ACIS-I NONE  60.00

===================================================================================

Proposal Number: 04500588            
Proposal Title: PROMPT CHANDRA OBSERVATIONS OF NEARBY SUPERNOVAE

PI: WALTER LEWIN                   
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose to continue our studies of Type II and Type Ib/c supernovae
(SNe). Our work on SNe 1999em and 1998S has shown that Chandra spectra can reveal
details of the star's pre-SN evolution and of the interaction of the
circumstellar matter and the SN ejecta (which is similar to the GRB afterglow
phase), which cannot be obtained from any other wavelength regime. Our X-ray
spectra of 1998S revealed for the first time in a young SN a wealth of heavy
element over-abundances (Ne, Al, Si, S, Ar, and Fe) which could be used to
constrain the progenitor's mass. In the years to come, no doubt, a wide variety
of SNe will be observed with Chandra, and ultimately a picture will emerge that
will substantially deepen our knowledge. With SN 1998S we have only begun to
scratch the surface.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            SN WITHIN 10 MPC      ACIS-S NONE  50.00
                            SN WITHIN 10 MPC      ACIS-S NONE  50.00
                            SN WITHIN 10 MPC      ACIS-S NONE  50.00
                            SN WITHIN 10 MPC      ACIS-S NONE  50.00
                            SN BETWEEN 10 AND 25  ACIS-S NONE  50.00
                            SN BETWEEN 10 AND 25  ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04500615            
Proposal Title: X-RAY BURSTS FROM ANOMALOUS X-RAY PULSARS

PI: VICTORIA KASPI                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We have recently discovered two X-ray bursts from the direction of the
anomalous X-ray pulsar (AXP) 1E 1048.1-5937 in data obtained with the PCA aboard
the RXTE. The probability that these represent the discovery of X-ray bursts from
an anomalous X-ray pulsar, like those seen in soft gamma repeaters (SGRs), is
very high. We request a Chandra TOO observation of 1E 1048.1-5937 or any AXP, to
be triggered by the detection of bursting behavior using data from our
already-approved RXTE monitoring project. The confirmation that X-ray bursts are
indeed coming from the precise position of 1E 1048.1-5937 would be a landmark
discovery, and a major victory for the magnetar model for AXPs and SGRs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 10:50:08.90  -59:53:20.40  Any AXP               ACIS-S NONE  30.00
 10:50:08.90  -59:53:20.40  Any AXP               ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04500629            
Proposal Title: CHANDRA TOO OBSERVATIONS OF TYPE IA SUPERNOVAE

PI: JOHN HUGHES                    
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: One of the major unsolved problems in supernova research concerns the
precise nature of the progenitor systems of Type Ia supernovae. We propose
Chandra target-of-opportunity observations of a bright Type Ia supernova in order
to better constrain the circumstellar environment of the progenitor and therefore
shed light on the nature of the precursor star. The ability of our team to
rapidly determine whether a supernova meets our trigger criteria, coupled with
the broadband sensitivity and rapid response of Chandra, means that the proposed
observations will be more than an order of magnitude more sensitive than any
previous ones obtained in any waveband: X-ray, optical or radio.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            SN IA TOO             ACIS-S NONE  20.00
                            SN IA TOO             ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04500664            
Proposal Title: DEM L71: SHOCK PHYSICS AT HIGH RESOLUTION

PI: CARA RAKOWSKI                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose a deep {\it Chandra} observation of the Balmer-dominated
SNR, DEM~L71, to unambigously constrain the electron temperature immediately
behind the blastwave, at locations of varying shock speed. Combined with the
proton temperature derived from our existing H$\alpha$ spectra, we will determine
the degree of electron-proton temperature equilibration at the shock front. We
will use an ACS WFC H$\alpha$ image to localize the position of the blastwave to
0.1$^{\arcsec}$ and thereby constrain the shock geometry, a critical component in
fitting the blastwave X-ray spectra. An ACS WFC [O~III] image will identify
regions to avoid in our X-ray spectral analysis, where the onset of radiative
cooling behind the shock invalidates the interpretation of our H$\alpha$
spectra.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:05:41.70  -67:52:38.00  DEM L71               ACIS-S NONE 110.00

===================================================================================

Proposal Number: 04500049            
Proposal Title: OBSERVATION OF SNR RCW103

PI: GORDON GARMIRE                 
Subject Category: SN, SNR AND ISOLATED NS                           


                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:17:36.30  -51:02:25.00  RCW103                ACIS-S NONE   5.00
 16:17:36.30  -51:02:25.00  RCW103                ACIS-S NONE   5.00
 16:17:36.30  -51:02:25.00  RCW103                ACIS-S NONE   5.00
 16:17:36.30  -51:02:25.00  RCW103                ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04500745            
Proposal Title: UNRAVELING THE COOLING TREND OF A MAGNETAR: STUDY OF SOFT GAMMA
REPEATER SGR 1627-41

PI: CHRYSSA KOUVELIOTOU            
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose a 50 ksec observation to measure the flux of SGR 1627-41.
Our first Chandra observation found the source flux level to be ten times less
than the projected value estimated from the decaying trend of the source we
established with 2.3 years of monitoring. Establishing the decaying trend of the
source will provide insight in the cooling mode of a magnetar and probe neutron
star fundamental properties, such as heat transfer and dissipation. Further, if
the source is found to continue this extreme decay, we will have the first
evidence of the existence of extremely faint magnetars, which has direct
consequences for their total numbers in our galaxy and their link with other
objects, such as Dim Isolated Neutron Stars.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:35:51.80  -47:35:23.30  SGR 1627-41           ACIS-S NONE  25.00

===================================================================================

Proposal Number: 04500748            
Proposal Title: COMPLETING THE CENSUS OF COMPACT OBJECTS IN SUPERNOVA REMNANTS

PI: DAVID KAPLAN                   
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: That neutron stars exhibit wide diversity has been dramatically
illustrated by the enigmatic central objects in Cas A and SN 1987A. To quantify
this diversity, we have begun a systematic program to identify central sources in
all supernova remnants (SNRs) within 5 kpc. With Chandra we are now investigating
nine small-diameter SNRs, and have requested XMM observations of seven
medium-diameter SNRs. Here we propose Chandra observations of suspected central
objects in the remaining six (largest) SNRs. We are undertaking vigorous
multi-wavelength observations to eliminate interlopers. When complete, our
program, in conjunction with archival data, will provide a coherent census of
neutron stars --- an enduring legacy of the Chandra mission.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:57:07.40  +45:27:51.00  RX J045707.4+452751   ACIS-S NONE   5.00
 05:03:39.80  +45:17:15.00  RX J050339.8+451715   ACIS-S NONE   5.00
 06:27:40.30  +07:31:03.00  RX J062740.3+073103   ACIS-S NONE   3.00
 06:30:03.50  +05:45:34.00  LNS1                  ACIS-S NONE   3.00
 06:33:34.00  +06:08:52.00  LNS 3                 ACIS-S NONE   3.00
 06:39:25.90  +05:15:11.00  LNS 6                 ACIS-S NONE   3.00
 15:01:39.60  -40:38:15.00  RX J150139.6-403815   ACIS-S NONE   3.00
 15:08:18.80  -40:17:30.00  RX J150818.8-401730   ACIS-S NONE   3.00
 15:19:42.80  -37:52:55.00  RX J151942.8-375255   ACIS-S NONE   3.00
 19:32:28.60  +34:53:18.00  RX J193228.6+345318   ACIS-S NONE   3.00
 19:34:58.10  +33:53:01.50  RX J193458.1+335301   ACIS-S NONE   3.00
 20:49:35.70  +29:38:57.00  AX J2049.6+2939       ACIS-S NONE   3.00
 20:50:42.90  +28:46:43.50  RX J205042.9+284643   ACIS-S NONE   3.00

===================================================================================

Proposal Number: 04500774            
Proposal Title: IS AX J1845-0258 AN ANOMALOUS X-RAY PULSAR?

PI: VICTORIA KASPI                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The young 7 s pulsar AX J1845-0258 has properties that strongly suggest
that it is a member of the rare class of "anomalous X-ray pulsars" (AXPs), and
may be a magnetar. However, its spin-down rate, hence its magnetic field, has not
been measured because the source has exhibited unusual flux variability. This
source represents a possible challenge to the magnetar model, or may be a new
manifestation of young neutron stars. We request seven short ACIS-S observations
of AX J1845-0258 for use in a carefully crafted observing plan that will allow us
to determine the pulsar's spin-down rate, hence test the AXP identification,
while simultaneously quantifying its flux variability for the first time in a
meaningful way.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  12.00
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  12.00
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  12.00
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  12.00
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  12.00
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  12.00
 18:44:54.60  -02:56:53.00  AX J1845-0258         ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04500809            
Proposal Title: EXPLORING THE ZOO OF NEUTRON STARS: HUNTING CGPS SNRS WITH
CHANDRA

PI: SAMAR SAFI-HARB                
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The number of X-ray pulsars and plerions associated with supernova
remnants (SNRs) has been continuously increasing, thanks to Chandra's superb
resolution. These discoveries are advancing our understanding of the birth
properties and evolution of neutron stars, and challenging decades of theoretical
work, by revealing a new class of puzzling compact objects. Expanding the sample
of neutron star-SNR associations is needed to address this growing zoo. Two young
faint SNRs recently discovered by the Canadian Galactic Plane Survey (CGPS), and
a third nearby remnant, are classified as Shells--yet they have a
centrally-filled X-ray morphology hinting at the presence of compact objects. We
propose to observe them with ACIS to primarily hunt for their putative collapsed
cores.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:50:58.00  +45:21:35.00  G85.4+0.7             ACIS-S NONE  14.50
 20:59:02.20  +44:53:53.40  G85.9-0.6             ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04500821            
Proposal Title: PLERIONS WITH HOLES? THE UNUSUAL SUPERNOVA REMNANTS DA 495 AND
G76.9+1.0

PI: ZAVEN ARZOUMANIAN              
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We request a total of 50 ks to observe with Chandra two synchrotron
nebulae that resemble the Crab in many respects but are unusual in their spectral
and morphological properties---most notably, they exhibit distinct minima in
radio flux at their geometrical centers. The nebulae appear to be best described
as old plerionic supernova remnants. Our Chandra observations will image the
extended, non-thermal radio structures and reveal their spectra, test for the
presence of X-ray ``holes'' associated with the radio minima, and unearth any
small-scale features (jets, tori) around their central engines. Our results will
allow for unambiguous classification of these objects and will test long-held
theories of plerion evolution at late times, an observationally unconstrained
regime.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:52:16.80  +29:25:55.20  DA 495                ACIS-I NONE  25.00

===================================================================================

Proposal Number: 04500859            
Proposal Title: PSR J2021+3651: A GAMMA-RAY PULSAR AT THE EDGE OF THE GALAXY?

PI: MALLORY ROBERTS                
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We have recently discovered a young, energetic pulsar coincident with a
compact, hard, X-ray source within the error box of the high-energy gamma-ray
source 2CG 075+00 / GeV J2020+3658. The high dispersion measure indicates an
extroadinarily large distance for both the gamma-ray and X-ray luminosity. We
propose to image the X-ray source in order to resolve the morphology of the
presumed pulsar wind nebula, obtain an accurate absorption measurement, and
determine a precise position relative to a nearby radio supernova remnant
candidate. We also propose to perform a continuous clocking observation to detect
X-ray pulsations and avoid problems of pile-up and confusion for the pulsed
spectrum.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:21:05.20  +36:51:08.40  PSR J2021+3651        ACIS-S NONE  20.00
 20:21:05.20  +36:51:08.40  PSR J2021+3651        ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04500911            
Proposal Title: THE PULSAR WIND NEBULA AROUND PSR 0656+14

PI: VYACHESLAV ZAVLIN              
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: PSR B0656+14 (characteristic age = 110 kyr) is the youngest and the
brightest of the X-ray detected middle-aged radio pulsars. The X-ray spectrum
consists of at least two components, a soft thermal component and a hard
component interpreted as a power-law. Chandra observations have provided evidence
for extended emission around the pulsar with a characteristic size of about 3-5
arcseconds, the pulsar-wind nebula (PWN) around the pulsar. The observed
properties of the PWN are compatible with the predictions of the theoretical
models. We propose an observation of the pulsar and its PWN with HRC-I. This
observation will provide the image without instrumental artifacts to confirm the
detection of the PWN, and measure its luminosity and morphology.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 06:59:48.10  +14:14:21.50  PSR B0656+14          HRC-I  NONE  40.00

===================================================================================

Proposal Number: 04500909            
Proposal Title: SUPERNOVA REMNANTS IN THE N19 HII COMPLEX

PI: ROSA WILLIAMS                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The N19 HII complex in the Small Magellanic Cloud offers an unrivaled
opportunity to study an active HII region as a coherent whole. It contains
several supernova remnants (SNRs) within a small spatial extent, which enables us
to examine these SNRs in the physical context of their surroundings. We propose
Chandra ACIS observations to spatially resolve individual X-ray features in the
complex; obtain spectra for each spatial component; and determine the actual
number and distribution of SNRs in N19. These X-ray data will also help to
constrain physical properties of the SNRs, such as progenitor populations,
energetics, and ages. The results will extend our knowledge of SNR evolution
within the kind of complex regions that may eventually form superbubbles.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:47:17.00  -73:08:22.00  N 19 AREA             ACIS-S NONE  75.00

===================================================================================

Proposal Number: 04500914            
Proposal Title: THE ORIGIN OF X-RAY RICH GAMMA-RAY BURSTS: HIGH-Z EVENTS AND NEW
COSMIC EXPLOSIONS

PI: LUIGI PIRO                     
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: X-ray Flashes (XRF, aka X-ray rich GRB's) have been recently identified
as a new class of GRB. This class could hide some of the long-sought members of
high-z GRB. For an event at $z>5$, the peak of the gamma-ray emission would be
redshifted into the X-ray band and absorption by Ly$_{\alpha}$ forest clouds
would effectively estinguish optical photons. Thus, a high-z GRB would appear as
a {\it optically dark X-ray rich GRB}. They could also be a new type of cosmic
explosion, likely similar to a GRB, but in which the fireball expansion is mildly
relativistic ("dirty" fireball). We propose to follow-up with Chandra/ACIS one of
these events identified either by HETE-2 or INTEGRAL.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            GRB                   ACIS-I NONE  20.00
                            GRB                   ACIS-I NONE  40.00

===================================================================================

Proposal Number: 04500935            
Proposal Title: MODERATELY-SIZED, MIDDLE-AGED SUPERNOVA REMNANTS IN MAGELLANIC
CLOUDS: AN UNEXPLORED POPULATION

PI: KAZIMIERZ BORKOWSKI            
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose ACIS observations of three mature Magellanic Cloud supernova
remnants, chosen to be most likely in the Sedov evolutionary phase and without
strong interaction with inhomogeneous surrounding material. We wish to see
whether our striking Cycle 2 finding, based on 3 similar LMC SNRs, of enhanced
iron emission is true of a larger sample, and if so, to characterize the ejecta
properties. Our previous study demonstrated that we will require high angular
resolution to separate different emission components. For the faintest target we
propose joint XMM-Newton observations. Such middle-aged remnants form an
excellent sample in which to investigate electron heating, ejecta mixing and
abundances, and possible cosmic-ray-modified shocks.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:51:06.70  -73:21:24.40  SNR 0049-73.6         ACIS-S NONE  50.00
 05:34:15.00  -70:33:42.00  SNR DEM L238          ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04500958            
Proposal Title: THE DYNAMICS OF THE PULSAR WIND NEBULA IN G11.2-0.3

PI: MALLORY ROBERTS                
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose to make a series of observations of the pulsar wind nebula
in the supernova remnant G11.23-0.3 to track the motion of individual dynamic
spots seen with an AO-1 observation. This will constrain the termination shock
radius and help us resolve the issue of the anomalously high magnetic field
inferred from broad band spectral observations. More importantly, these
observations will provide insight into the dynamical properties of a "typical"
PWN/SNR system. The greater integration time of the combined set will also aid in
resolving the true morphology of the PWN, which remains ambiguous.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:11:29.40  -19:25:25.00  G11.2-0.3             ACIS-S NONE  15.00
 18:11:29.40  -19:25:25.00  G11.2-0.3             ACIS-S NONE  15.00
 18:11:29.40  -19:25:25.00  G11.2-0.3             ACIS-S NONE  15.00
 18:11:29.40  -19:25:25.00  G11.2-0.3             ACIS-S NONE  15.00

===================================================================================

Proposal Number: 04500813            
Proposal Title: FIRST MEASUREMENT OF THE GRAVITATIONAL REDSHIFT AT THE SURFACE
OF A NEUTRON STAR

PI: GEORGE PAVLOV                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Chandra observations of 1E1207.4-5209, the neutron star (NS) in the PKS
1209-51/52 SNR, allowed us to discover absorption features in the NS thermal
spectrum. This discovery provides a unique opportunity to measure the NS mass and
radius and constrain the equation of state. We interpret the features as lines of
once-ionized helium formed in the NS atmosphere with a magnetic field of 150
Teragauss, which implies a radius of 9-14 km for a one-solar-mass NS. To measure
accurate line energies and resolve potentially multiple lines blended in the
low-resolution CCD spectrum, we propose a deep observation with ACIS/LETG. This
observation will provide a high-resolution phase-resolved spectrum, required for
precise measurement of the NS mass and radius.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:10:00.80  -52:26:25.10  1E 1207.4-5209        ACIS-S NONE  20.00
 12:10:00.80  -52:26:25.10  1E 1207.4-5209        ACIS-S NONE  20.00
 12:10:00.80  -52:26:25.10  1E 1207.4-5209        ACIS-S LETG  95.00
 12:10:00.80  -52:26:25.10  1E 1207.4-5209        ACIS-S LETG 165.00

===================================================================================

Proposal Number: 04500015            
Proposal Title: SURFACE TEMPERATURE OF ISOLATED NEUTRON STARS

PI: STEPHEN MURRAY                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Using the high resolution imaging of Chandra and the high time
resolution, we can resolve the pulsed flux from the unpulsed flux from an
isolated neutron star.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 19:52:58.20  +32:52:41.00  CTB 80                HRC-S  NONE  65.00

===================================================================================

Proposal Number: 04500995            
Proposal Title: LOCALIZATION OF "OPTICALLY DARK" GRBS WITH SLOW TOO
OBSERVATIONS.

PI: GORDON GARMIRE                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose to carry out a time-critical program of Chandra GTO
observations of HETE-discovered GRBs that are "optically dark" (i.e. the ~50% of
GRBs which have no readily-identified optical counterpart). Chandra will provide
<1" afterglow localizations, identifing 4 out of ~8, or ~50%, of the optically
dark GRBs that HETE will detect in CY2003, the final year of the HETE primary
mission. Localizations will be made public within 24 hours and will be promptly
(<10 days) followed up by pre-arranged HST observations. We have requested 50
ksec of Cycle 4 GTO time for 2 Fast TOOs. In the current proposal, we request an
additional 180 ksec total for 2 GTO Slow TOOs. Slow TOOs are sufficient for GRBs
with very bright afterglows or possibly for the little studied class of "X-ray
rich" GRBs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            STOO#1                ACIS-I NONE  35.00
                            STOO #2               ACIS-I NONE  35.00
                            STOO #2               ACIS-I NONE  55.00
 11:18:32.60  +15:02:59.90  STOO#1                ACIS-S NONE  55.00

===================================================================================

Proposal Number: 04500993            
Proposal Title: LOCALIZATION OF "OPTICALLY-DARK" GRBS WITH FAST TOO OBSERVATIONS

PI: GORDON GARMIRE                 
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: We propose to carry out a time critical program of GTO observations by
Chandra of HETE-discovered GRBs that are ``optically dark'' (i.e. the ~50% of
GRBs which have no readily-identified optical counterpart). Chandra can provide
<1'' afterglow localizations for a substantial fraction of the optically dark
GRBs that HETE will detect in CY2003. These localizations will be made public
within 24 hours and will be promptly (<10 days) followed up by pre-arranged HST
observations. We are requesting 50 ksec total of GTO time for 2 Fast TOOs, both
of which have a first epoch observation made < 2 days of the GRB. Cycle 4
(CY2003) is the final year of the HETE primary mission, and the execution of this
program is essential to the ultimate success of the HETE mission.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            FAST TOO # 1          ACIS-I NONE  10.00
                            FAST TOO # 1          ACIS-I NONE  15.00
                            FAST TOO # 2          ACIS-I NONE  10.00
                            FAST TOO # 2          ACIS-I NONE  15.00

===================================================================================

Proposal Number: 04500580            
Proposal Title: MAKING THE MOST OF REMNANTS WITH CENTRAL OBJECT CANDIDATES

PI: ERIC GOTTHELF                  
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: Chandra has been instrumental in the process of resolving the issue of
which supernova remnants are host to central objects, discovering a number of
pulsar wind nebulae which previous X-ray telescopes could not sufficiently
resolve. In this continuing tradition, we request 123 ks of observing time to
resolve plerionic emission from three supernova remnants from the MOST Catalogue
which have hard X-ray counterparts. The census of such objects is small and
poorly understood. Chandra's history of resolving arcsecond features from pulsar
wind nebulae suggests that these observations will do much to further the study
of the structure and evolution of plerions in supernova remnants.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:34:52.50  -60:53:45.00  G293.8+0.6            ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04508134            
Proposal Title: EXPLORING THE GRB-SUPERNOVA CONNECTION VIA SN2003L

PI: SHRINIVAS KULKARNI             
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: The type Ibc SN 1998bw provides a link between GRBs and supernovae.
Like GRBs, it had relativistic ejecta (as inferred from the brilliant radio
emission and early non-thermal X-ray emission) but with lower Lorentz factor.
Ordinary SNe do not show bright radio emission at early times and theoretically
appear unable to produce significant relativistic ejecta. Thus it is generally
assumed that SN 1998bw harbored a central engine. For the past four years, we
have been searching for other such engine-driven SNe and have recently reported
bright emission from the type Ic SN2003L. With a radio luminosity that is
currently 1.9E+28 erg/s/Hz (15% of SN1998bw at peak) and rising, this event is
very similar to SN1998bw. A detection of non-thermal X-ray emission (synchrotron
or inverse-Compton) would confirm the inference of relativistic ejecta and mark
SN 2003L as another link between GRBs and SNe. A 30 ks observation will allow a
rough determination of the spectrum.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:03:12.30  +11:04:38.00  SN2003L               ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04508140            
Proposal Title: GRB030226: TESTING THE DUST DESTRUCTION HYPOTHESIS

PI: KRISTIAN PEDERSEN              
Subject Category: SN, SNR AND ISOLATED NS                           

Abstract: GRB030226 was discovered by HETE-2 and an optical transient identified
2.6h later. The redshift has now been measured to z=1.99 placing it in an ideal
redshift window for combined X-ray and lyman alpha studies: It is close enough
for X-ray absorption in the vicinity of the burst to be measurable in the CXO
spectrum and far enough that lyman alpha can be reached from the ground.
Combining the two measurements with optical/NIR observations we can accurately
determine the amount of oxygen and iron (dominating the X-ray absorption), the
amount of neutral hydrogen, and the dust content in the GRB environment. For this
burst, we can thus tell if the low dust content, found in most burst
environments, is due to either a) low metallicity and a universal dust-to-metals
ratio, or b) solar metallicity, but a low dust-to-metal ratio. In case b) most of
the metals are in the gas phase - indicating significant dust destruction.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:33:04.90  +25:53:55.00  GRB030226             ACIS-S NONE  40.00


***********************************************************************************
NORMAL GALAXIES                                   
--------------------------------------------------

===================================================================================

Proposal Number: 04600054            
Proposal Title: X-RAY MONITORING OF SAGITTARIUS A* AND THE GALACTIC CENTER

PI: GORDON GARMIRE                 
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose a 25-ks ACIS-I observation of Sagittarius A* (Sgr A*), the
Galactic supermassive black hole candidate. These data will be used 1) to search
for and characterize additional rapid X-ray flares from Sgr A*, 2) to
characterize the long-term flux and spectral variability of Sgr A* quiescent
emission on timescales of years, and 3) to monitor the fluxes and hardness ratios
of the 200 discrete X-ray sources in the field of view in order to identify X-ray
binaries in the direction of the Galactic center.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:45:40.00  -29:00:28.00  SGR A*                ACIS-I NONE  25.00

===================================================================================

Proposal Number: 04600059            
Proposal Title: X-RAY SOURCES IN THE NEARBY BARRED SPIRAL GALAXY NGC 1313

PI: GORDON GARMIRE                 
Subject Category: NORMAL GALAXIES                                   

Abstract: The goal of this observation is to monitor the transient sources in the
nearby barred spiral galaxy NGC 1313, to detect the nucleus of the galaxy, and to
search for diffuse emission.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:17:55.00  -66:34:40.00  NGC 1313              ACIS-I NONE  15.00
 03:17:55.00  -66:34:40.00  NGC 1313              ACIS-I NONE  15.00

===================================================================================

Proposal Number: 04600136            
Proposal Title: LOW MASS X-RAY BINARIES AND GLOBULAR CLUSTERS IN VIRGO
EARLY-TYPE GALAXIES

PI: CRAIG SARAZIN                  
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose observations of NGC 4526, NGC 4473, and NGC 4762, three
optically bright but X-ray faint early-type galaxies in the Virgo cluster. We
will detect the Low Mass X-ray Binary (LMXB) population in these galaxies, and
determine the luminosities, luminosity function, spectral properties, X-ray
colors, and variability of these sources. These galaxies will be observed as part
of the Hubble Space Telescope ACS Virgo Survey, which will determine the globular
cluster (GC) populations of these galaxies. Previous observations have shown that
a high fraction of LMXBs in E/S0 galaxies are located in GCs. We will compare the
properties of the GC and non-GC LMXBs, with the aim to understand the origin of
LMXBs, and to constrain the evolution of GCs and E/S0 galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:34:03.10  +07:41:59.30  NGC4526               ACIS-S NONE  44.00

===================================================================================

Proposal Number: 04600153            
Proposal Title: EXPLORING THE COOLING FLOW RIDDLE: THE NATURE AND EFFECT OF
NUCLEAR OUTBURSTS IN THE ELLIPTICAL GALAXY NGC4636

PI: CHRISTINE JONES                
Subject Category: NORMAL GALAXIES                                   

Abstract: The remarkable X-ray morphology of the elliptical galaxy NGC4636 is
best explained as resulting from strong shocks driven by a powerful, (~6 X
10^{56} ergs) and recent (~3 million years ago) outburst from the nucleus. We
propose a deep ACIS-S observation, that along with our deep VLA observation, will
allow us to explore the effects of AGN outbursts on cooling. At a distance of 15
Mpc, NGC4636 offers an opportunity to study the feedback between cooling flows
and AGN in detail. By mapping the strength of the shock fronts and tracing them
to large radii, we will constrain the nature of the outburst. To test recent
models in which AGN outbursts transport cool gas back to large radii, we will map
the temperature and distribution of heavy elements on a few arcseconds scales in
the galaxy core.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:42:50.00  +02:41:17.00  NGC4636               ACIS-I NONE  75.00
 12:42:50.00  +02:41:17.00  NGC4636               ACIS-I NONE  75.00

===================================================================================

Proposal Number: 04600195            
Proposal Title: IDENTIFYING LOW LUMINOSITY SOURCES IN THE NEAREST DWARF SPHERIOD
GALAXIES

PI: GAVIN RAMSAY                   
Subject Category: NORMAL GALAXIES                                   

Abstract: Observations of M81 show that disk and bulge X-ray sources have
different luminosity functions. Our `birth-death' model has explained the two
luminosity functions successfully. It also predicts a population of primordial
X-ray Binaries (XRBs). The best place to look for these XRBs is nearby dwarf
spheriodal galaxies. We propose to observe two of the closest using ACIS-I. These
observations will test the birth-death model and in addition detect bright
cataclymsic variables (CVs). This is the first census of CVs in dwarf galaxies,
and will provide a control model for studies of CV-formation in globular
clusters. We will also constrain the HII content in a HI rich and a HI rich poor
dwarf.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 18:55:03.30  -30:28:43.00  SAGITTARIUS DSPH      ACIS-I NONE  30.00

===================================================================================

Proposal Number: 04600334            
Proposal Title: X-RAY HALOES OF MASSIVE DISC GALAXIES: TESTING GALAXY FORMATION

PI: KRISTIAN PEDERSEN              
Subject Category: NORMAL GALAXIES                                   

Abstract: The luminosity of X-ray haloes around disc galaxies is a crucial
quantity for constraining theories for the assembly of disc galaxies. We have
compiled a unique physically realistic sample of hydrodynamical simulations of
disc galaxy formation and evolution, predicting present day X-ray halo
luminosities and the spatial distribution of X-ray emission. Here we propose to
test these novel models by obtaining deep Chandra pointings of two massive,
nearby, edge-on disc galaxies. A detection of X-ray haloes will, for the first
time, directly prove that disc formation is on-going today. Alternatively, a
non-detection will require a major re-thinking of the currently accepted scenario
for assembling disc galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:29:48.90  -17:57:59.40  NGC 5170              ACIS-I NONE  37.00
 14:44:55.90  +01:57:19.00  NGC 5746              ACIS-S NONE  37.00

===================================================================================

Proposal Number: 04600352            
Proposal Title: NGC 1705: TESTING THE PARADIGM OF THE WIND-DRIVEN EVOLUTION OF
DWARF GALAXIES

PI: TIMOTHY HECKMAN                
Subject Category: NORMAL GALAXIES                                   

Abstract: Dwarf galaxies are the galaxies most susceptible to energetic feedback
from massive stars, and are the most plausible sources of the early heating and
enrichment of the IGM by galactic winds. X-ray data are vital to study this
process, as they are the most direct probe of the hot gas that contains the
majority of the outflowing energy and metals. NGC 1705 is the prototypical
example of a starburst-blown superbubble "blowing-out" of the ISM. We propose to
obtain Chandra ACIS-S imaging spectroscopy of this galaxy. In conjunction with
our existing FUSE and HST far-UV spectroscopy, these data will directly test the
standard paradigm for the dynamical evolution of superbubbles and winds in dwarf
galaxies and elucidate the physical origin and long-term fate of the hot
X-ray-emitting gas.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:54:13.70  -53:21:40.80  NGC 1705              ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04600376            
Proposal Title: CHANDRA OBSERVATIONS OF THE EVOLVING CORE OF THE STARBURST
GALAXY NGC 253

PI: KIMBERLY WEAVER                
Subject Category: NORMAL GALAXIES                                   

Abstract: A Chandra observation of the nearby (~2.5 Mpc) starburst galaxy NGC 253
has shown tantalizing evidence for an AGN-like photoionizing source at the center
of a strong, but aging circumnuclear starburst. If true, this is the first clear
snapshot of the complex interplay between starburst and AGN activity and could be
key to our understanding of the evolutionary link between starbursts and AGN. The
goal of this proposal is to obtain high quality, spatially-resolved spectra of
the central ~20 x ~20 arcsecond region of NGC 253 to distinguish between
collisionally ionized and photoionized plasmas and measure the physical
properties of the central source. This science requires distinguishing X-ray
sources that are only a few arcseconds apart, and hence cannot be done with XMM.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:47:33.30  -25:17:18.00  NGC 253               ACIS-S NONE  85.00

===================================================================================

Proposal Number: 04600406            
Proposal Title: THE NATURE OF ULTRALUMINOUS X-RAY SOURCE POPULATION IN M51

PI: YUICHI TERASHIMA               
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose to observe the spiral galaxy M51 (NGC 5194 and 5195) to
investigate the nature of ultraluminous X-ray sources (ULXs) by using spectral
variability. Our previous Chandra observations have shown that M51 contains 7
ULXs with luminosities greater than 10^39 ergs/s in 0.5-8 keV and that there is
great variety of the properties of the ULXs (persistent and transient, hard and
soft spectra, with and without emission lines). The new Chandra data will be used
to measure the spectral shapes more precisely, to determine the spectral state
based on the spectra and comparison with the precious observations, and to
understand the physical nature of the variety of ULXs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:29:56.00  +47:13:00.00  M51                   ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04600483            
Proposal Title: PROBING THE SPECTRAL VARIABILITY OF THE ULTRALUMINOUS X-RAY
SOURCE NGC 5204 X-1

PI: TIMOTHY ROBERTS                
Subject Category: NORMAL GALAXIES                                   

Abstract: Recent results suggest that the ultraluminous X-ray sources (ULX) found
in nearby galaxies may be related to the Galactic microquasars. One particular
test of this hypothesis is to monitor the spectral variability of a ULX over a
range timescales in order to search for microquasar-like behaviour. Here we
propose a monitoring programme of the ULX NGC 5204 X-1, utilising a total of 100
ks of ACIS-S time, which will sample the spectral varability of this object on
three distinct timescales (hours, days and weeks). The resulting data will
define, essentially for the first time, the characteristics of the short-term
variability of a ULX and thereby clarify whether it is correct to link this class
of source to the Galactic microquasars.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE   5.00
 13:29:38.60  +58:25:06.00  NGC 5204 X-1          ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04600526            
Proposal Title: LYMAN-ALPHA BLOBS AND THE FORMATION OF STRUCTURE AT HIGH
REDSHIFT

PI: GERARD WILLIGER                
Subject Category: NORMAL GALAXIES                                   

Abstract: Bright, extended Lyman-alpha nebulae (known as blobs) appear to be
common in the densest environments at high redshift, and may reveal an important
stage in galaxy evolution. Current Chandra data cannot distinguish between the
possible excitation mechanisms, but suggest that we are seeing dense intracluster
gas either falling into forming galaxies (cooling flows) or being expelled into
the ICM, enriching it. Evidence also suggests that some blobs harbor AGN. We
propose to observe four Lyman-alpha blobs in a single cluster at z=2.38. Our ACIS
100 ksec exposure will complete the Chandra observations of all currently known
blobs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 21:42:42.20  -44:23:24.00  CLUS 214228-442029    ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04600538            
Proposal Title: CHANDRA OBSERVATIONS OF RICH LMC STAR CLUSTERS

PI: ANDREA PRESTWICH               
Subject Category: NORMAL GALAXIES                                   

Abstract: A large fraction of the violent star formation in starburst galaxies
takes place in ``Super Star Clusters'' (SSC). These clusters are much richer than
those seen in our galaxy, and may be the progenitors of globular clusters. We
propose to observe 4 rich young clusters in the Large Magellanic Cloud. These
clusters are almost as rich as those in starburst galaxies and are close enough
to be resolved with Chandra. Our science goals are to characterize the X-ray
emission from these clusters, search for optical and IR counterparts, constrain
the onset of binary formation, and search for Intermediate Mass X-ray Objects
which may be the progenitors of Millisecond Pulsars in globular clusters.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:04:14.00  -66:26:06.00  NGC 1818              ACIS-S NONE  25.00
 05:06:16.00  -64:55:06.00  NGC 1831              ACIS-S NONE  25.00

===================================================================================

Proposal Number: 04600582            
Proposal Title: THE INTERACTION OF HOT AND COLD GAS IN GALAXIES

PI: JIMMY IRWIN                    
Subject Category: NORMAL GALAXIES                                   

Abstract: Sa galaxies have roughly equal amounts of hot and cold gas, yet little
is known about the interaction between the two phases. It is possible that the
gas is thermally coupled, with cold gas cooling hot gas where the two phases
interface. This would lead to a softening of the X-ray spectrum in the area of
overlap. Alternatively, the phases could be thermally isolated, so that the cold
gas in front of the hot gas absorbs soft X-rays behind it. We propose to observe
three galaxies with unusual HI distributions to search for the interaction
between the two phases. We will verify whether the hot gas fills the holes in the
HI distribution. We will also investigate the lack of very luminous LMXBs in
spiral bulges, and determine the luminosity function of the LMXBs that do exist
in the bulges.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 22:57:13.30  -43:23:45.00  IC5267                ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04600717            
Proposal Title: RESOLVING X-RAY EMISSION FROM THE NUCLEUS OF M33

PI: GUILLAUME DUBUS                
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose to verify with a short 5 ks HRC-S exposure that the powerful
X-ray source coincident with the nucleus of M33 is unresolved at the highest
spatial resolution. This will establish the source as the nearest example of the
ultra-luminous X-ray sources Chandra has uncovered in other nearby galaxies.
Resolved X-ray emission would provide new constraints on the environment of the
nucleus.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:33:50.80  +30:39:36.80  M33 X-8 (NUCLEUS)     HRC-S  NONE   5.00

===================================================================================

Proposal Number: 04600794            
Proposal Title: THE IMPENDING DESTRUCTION OF NGC1427A

PI: MICHAEL GREGG                  
Subject Category: NORMAL GALAXIES                                   

Abstract: The Fornax cluster member NGC 1427A provides a spectacular example of a
hot ICM and cluster potential operating on a gas-rich irregular galaxy. On its
first passage through the cluster core, NGC 1427A is being disrupted by the
influence of the hot ICM, its own vigorous star formation, and the cluster tidal
field. We propose joint Chandra/HST imaging of this X-ray source to explore the
details of the impending galaxy destruction. Such events are common in the lives
of clusters, and help build the intracluster components. NGC 1427A provides a
snapshot of the progenitor ingredients about 1 Gyr prior to becoming true
intracluster material, and a chance to study the forces which shred galaxies and
build cluster gas and stellar components over a Hubble time.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:40:10.50  -35:37:38.00  NGC1427A              ACIS-S NONE  65.00

===================================================================================

Proposal Number: 04600846            
Proposal Title: GALACTIC CORONA ALONG THE HUBBLE SEQUENCE

PI: Q. DANIEL WANG                 
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose Chandra ACIS observations of two nearby edge-on galaxies
NGC4565 (Sb) and NGC4157 (Sc), which are located in regions of minimal Galactic
foreground absorption. These observations, together with our existing data on the
edge-on galaxies NGC4631 (Sd) and NGC3556 (Scd), will enable us to study the
dependence of extraplanar hot gas on galaxy type, star formation rate, and
environment. With a clean separation of diffuse X-ray emission from discrete
sources, we will be able to measure the content, morphology, thermal status, and
cooling rate of the hot gas and its role in shaping the galactic vertical
structures. We will also test theories of galaxy formation, which predict
substantial amounts of diffuse X-ray emission from hot gas cooling around massive
galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:36:20.80  +25:59:16.00  NGC 4565              ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04600854            
Proposal Title: DIFFUSE X-RAY EMISSION FROM THE HOT ISM IN NEARBY SPIRAL
GALAXIES

PI: WILTON SANDERS                 
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose 100-ks observations of two nearby face-on galaxies with the
ACIS S3 chip to measure the X-ray emission from their hot ISM. We have selected
NGC 3631 and NGC 3938 because of their relatively high star formation rates. Our
primary goal is to characterize the spatial distribution and spectral
characteristics of the hot interstellar plasma in spiral galaxies similar to the
Milky Way. The CXO angular resolution allows us to separate diffuse and point
source emission, and the ACIS spectral resolution allows us to find the
temperature and abundance parameters of the hot ISM. Other goals are to better
understand the diffuse X-ray emission seen in some edge-on galaxy halos, to study
the point sources in the galactic disk, and to study the cosmological diffuse
background below 0.5 keV.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:21:02.80  +53:10:09.30  NGC 3631              ACIS-S NONE 100.00

===================================================================================

Proposal Number: 04600879            
Proposal Title: DO ULIG'S DRIVE HOT GALACTIC WINDS?

PI: CRYSTAL MARTIN                 
Subject Category: NORMAL GALAXIES                                   

Abstract: Ultraluminous infrared galaxies (ULIGs) are signposts of the
galaxy-galaxy mergers which underlie current models of galaxy assembly. These
dusty environments hide the largest starbursts and are thought to be the
birthplace of elliptical galaxies and quasars. The ULIG phase is brief, however,
and we would like to understand how the obscuring dust and gas are removed. Half
of the 40 ULIGs in our IR-flux-limited sample show evidence for cold, outflowing
gas in deep Keck~II spectra. Only one of these is an approved Chandra target, so
we request observations of the four ULIGs with the strongest galactic winds. We
will detect (and spatially resolve) the thermal X-ray emission from the hot winds
in these systems if they exist.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 10:59:18.25  +24:32:33.30  IRAS10565+2448        ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04600850            
Proposal Title: A CHANDRA AND HST STUDY OF IC 10: THE NEAREST STARBURST GALAXY
TO THE MILKY WAY

PI: FRANZ BAUER                    
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose joint Chandra and HST observations of IC 10, the nearest
starburst galaxy to the Milky Way (0.8 Mpc). We detected a possible ultraluminous
X-ray binary in IC 10 (hereafter X-1) with ROSAT, but its properties were very
poorly constrained. Chandra+HST will provide a far better measure of X-1's
luminosity, spectrum, environment, and position (Wolf-Rayet companion?). The
Chandra image will also allow us to study most high-state X-ray binaries and the
brightest young, evolving supernova remnants in IC 10, while the HST images will
constrain the properties of the intermediate stellar mass population over much of
the galaxy. This combination will thus offer a high-resolution glimpse into the
early stages of stellar evolution, enabling us to test ideas about the starburt
processes.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:20:29.00  +59:16:51.00  IC 10                 ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04600441            
Proposal Title: AN X-RAY SEARCH FOR EXTRAGALACTIC SUPERNOVA REMNANTS IN THE
SCULPTOR GROUP GALAXIES NGC 300 AND NGC 7793

PI: THOMAS PANNUTI                 
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose to conduct an X-ray search for supernova remnants (SNRs) in
the Sculptor Group Galaxies NGC 300 and NGC 7793 using the ACIS-S3 chip on
Chandra in imaging mode. These two galaxies are part of a high-resolution radio
survey using the VLA to identify extragalactic SNRs. Chandra observations will
detect X-ray SNRs in these galaxies and these sources will be added to the radio
and optical samples, yielding a large number of equidistant SNRs in each galaxy.
The luminosity, energy, diameter and other properties of these SNRs will be
examined, and comparisons will be made between galactic environments, star
formation, and supernova rates. Properties of other X-ray sources detected in
these observations (X-ray binaries and background sources) will also be
analyzed.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 23:57:48.60  -32:35:26.00  NGC 7793              ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04600767            
Proposal Title: X-RAY TAILS IN EARLY TYPE GALAXIES

PI: DONG-WOO KIM                   
Subject Category: NORMAL GALAXIES                                   

Abstract: We propose ACIS observations (total 60 ks) of X-ray tails in NGC 4406
and NGC 7619. They provide a direct evidence of ram pressure stripping. With the
superb Chandra resolution, we will be able to determine the degree of clumpiness
and physical properties of the stripped, perturbed hot ISM to better understand
the stripping process. The X-ray tails also provide a rare opportunity to
directly investigate inhomogeneous cooling which may similarly take place near
the center of the cooling flow. We will determine metal abundance and its
variation and also test the hypothesis of extreme metallicity variation. Because
the the X-ray tail is essentially free from LMXBs and AGN/radio-jets, the
interpretation of X-ray data and hence abundance measurement is less complex than
in the cooling core.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 23:20:10.00  +08:10:00.00  NGC 7619              ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04600088            
Proposal Title: IR EXCESS GALAXIES: YOUNG STARBURSTS OR BURIED AGN?

PI: GORDON GARMIRE                 
Subject Category: NORMAL GALAXIES                                   

Abstract: We porpose to observe 7 galaxies with Ir excess relative to radio to
search for faint AGN activity.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:35:27.40  -09:21:20.00  NGC 988               ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04600089            
Proposal Title: ALTERNATE- IR EXCESS GALAXIES: YOUNG STARBURSTS OR BURIED AGN?

PI: GORDON GARMIRE                 
Subject Category: NORMAL GALAXIES                                   

Abstract: We porpose to observe 7 galaxies with Ir excess relative to radio to
search for faint AGN activity.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:35:48.30  +02:15:29.00  UGC 3097              ACIS-S NONE  11.00


***********************************************************************************
ACTIVE GALAXIES AND QUASARS                       
--------------------------------------------------

===================================================================================

Proposal Number: 04700004            
Proposal Title: OBSERVATIONS OF THE OPTICAL JET OF MH 2136-428

PI: PAOLO PADOVANI                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We will image MH 2136-428 with HST/ACS in three bands: F475W, F625W,
F850LP, i.e., SDSS g, r, z. The Chandra exposure time has been determined based
on the results of Pesce et al. (2001) on 3C 371. The optical jet of this source
has a surface brightness roughly 1.5 magnitudes fainter than that of our source,
but the S/N ratio of the Chandra observations was far from optimal. Assuming that
the X-ray-to-optical ratio of the jet in MH 2136-428 is similar to that of 3C
371, 10ks should allow us to constrain the presence of an X-ray jet without
reasonable doubt.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 21:39:24.10  -42:35:21.30  MH 2136-428           ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04700035            
Proposal Title: SOLVING THE ENIGMAS OF THE NEARBY SEYFERT/STARBURST GALAXY
NCG1365 WITH CHANDRA ACIS-S

PI: PETER PREDEHL                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: NGC 1365 is a barred spiral galaxy showing both, AGN and starburst
activity. A 15 ksec Chandra ACIS-S observation will allow to disentangle the
starburst and AGN contibution. It will also give a precise position of the X-ray
luminous off-nuclear source N1365-X1, and allow to study the nature of this
source. In the proposal, we show that the observation will allow some key test of
the unified model of AGN. Several other interesting science topics will also be
addressed.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:33:36.40  -36:08:25.00  NGC 1365              ACIS-S NONE  15.00

===================================================================================

Proposal Number: 04700036            
Proposal Title: THE NATURE OF THE X-RAY SOURCE 1E0104+3153

PI: PETER PREDEHL                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose a 5 ksec Chandra ACIS-S observation, to solve the
longly-debated puzzle of the nature of the X-ray source 1E0104+3153. The source
might be identified with a high-redshift quasar, or with the intra-cluster-medium
of an intermediate-distant group of galaxies. One key test is to check for source
extent which is only possible with the high spatial resolution of Chandra. We
show that, whatever the outcome of the observation, it will allow interesting
follow-up science.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:06:58.70  +32:09:18.00  1E0104+3153           ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700037            
Proposal Title: MONITORING THE X-RAY TRANSIENT AGN RX J2217.9-5941

PI: PETER PREDEHL                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: When observed in X-rays AGN show a wide range of variabilities. While
variabilities by factors of 2-3 are quite common, the most extreme form of
variability is X-ray transience. In this case the source is bright only at one
time and becomes fainter by factors of several 100s of even vanishes from the
X-ray sky. X-ray transience can be explained by either a dramatic chance of the
accretion disk properties or by a rapid chance of then accretion rate, either by
disk instabilities of by tidal disruption of a star by the central black hole. I
propose to monitor the X-ray transient candidate, RX J2217.9--5941 for short two
Chandra observations. The sources was bright in the ROSAT All-Sky Survey but
appeared to be very faint when observed years later.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 22:17:56.60  -59:41:30.00  RX J2217.9-5941       ACIS-S NONE   5.00
 22:17:56.60  -59:41:30.00  RX J2217.9-5941       ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700038            
Proposal Title: PRECISE DETERMINATION OF THE BRIGHT END OF THE LOCAL GALAXY
X-RAY LUMINOSITY FUNCTION

PI: PETER PREDEHL                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: The X-ray luminosity function (XLF) of local galaxies and of local AGN
was derived from the ROSAT Bright Survey (RBS). Both XLFs are relatively
uncertain in the range of 41.0 4

PI: GORDON GARMIRE                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose Chandra ACIS-S snapshot observations of a sample of luminous
z > 4 quasars with radio detections in the FIRST survey. Radio-detected quasars
are known to be among the X-ray brightest quasars at low redshift, and thus we
also expect them to be among the X-ray brightest quasars at z > 4. Our targets
have a range of radio loudness, and some of them should be among the best z > 4
quasars for future detailed study in X-rays. Observations of these targets will
help to bridge the enormous gap in radio loudness between the radio-quiet z > 4
objects we are studying at present and the extremely radio-loud blazars at z >
4.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:25:18.30  +37:05:17.90  FIRST 0725+3705       ACIS-S NONE   5.00
 07:47:11.20  +27:39:03.60  FIRST 0747+2739       ACIS-S NONE   5.00
 08:39:46.20  +51:12:02.80  SDSS083946.22+511202  ACIS-S NONE   5.00
 09:18:24.40  +06:36:53.40  J 091824+063653       ACIS-S NONE   5.00
 13:09:40.60  +57:33:09.10  FIRST 1309+5733       ACIS-S NONE   5.00
 13:25:12.50  +11:23:29.80  J 132512+112329       ACIS-S NONE   5.00
 14:23:08.20  +22:41:57.50  FIRST 1423+2241       ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700100            
Proposal Title: THE LARGE-SCALE GALACTIC OUTFLOW IN THE SEYFERT GALAXY NGC 2992

PI: EDWARD COLBERT                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Only now, with Chandra, can we finally image the hot gas in Large-Scale
(kpc) Outflows (LSOs) in Seyferts and (a) study its X-ray morphology, (b) obtain
reliable temperatures and luminosities, and (c) infer the density, mass, pressure
and cooling time. These quantities can be compared with pressures, kinetic energy
rates, and masses from models based on optical kinematic and radio data. The LSO
in NGC 2992 is quite different from those that have already been observed with
Chandra and have linear nuclear radio structures. It has a diffuse sub-kpc radio
structure (but NO starburst) and a wide-angled outflow. We shall use the Chandra
X-ray data with our optical Fabry-Perot data, radio images, and published
ionization results to diagnose the LSO in NGC2992.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 09:45:42.00  -14:19:35.00  NGC2992               ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700170            
Proposal Title: A CHANDRA AND XMM-NEWTON STUDY OF THE MOST DISTANT QUASARS:
X-RAYING THE FIRST MASSIVE BLACK HOLES

PI: WILLIAM BRANDT                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to continue our systematic Chandra and XMM-Newton study of
the most distant known quasars, with our ultimate goals being to learn about the
central power sources and environments of the first quasars to form in the
Universe. We request exploratory observations of 13 quasars; most have z > 4.8.
We will define their broad-band spectral energy distributions and reliably
determine the X-ray luminosity function of optically selected quasars at the
highest redshifts. Count stacking will give basic spectral constraints in the
2-50 keV rest-frame band, and these observations will provide the key flux
information needed for effective planning of future X-ray spectroscopy. We will
also measure the X-ray properties of a remarkable group of high-redshift quasars
lacking emission lines.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:11:15.20  +14:46:01.80  SDSS J001115+144601   ACIS-S NONE   3.50
 13:02:16.10  +00:30:32.10  SDSS J130216+003032   ACIS-S NONE  10.80
 14:33:52.20  +02:27:14.00  SDSS J143352+022714   ACIS-S NONE   3.50
 14:42:31.70  +01:10:55.30  SDSS J144231+011055   ACIS-S NONE  11.40
 16:53:54.60  +40:54:02.20  SDSS J165354+405402   ACIS-S NONE   3.50
 22:25:09.20  -00:14:06.90  SDSS J222509-001406   ACIS-S NONE   3.50
 22:28:45.20  -07:57:55.30  SDSS J222845-075755   ACIS-S NONE   7.00

===================================================================================

Proposal Number: 04700181            
Proposal Title: METALLICITY DETERMINATION IN A NARROW LINE SEYFERT 1 GALAXY
USING JOINT CHANDRA \& HST OBSERVATIONS

PI: SMITA MATHUR                   
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: By virtue of their extreme properties, NLS1s have given us crucial
leverage on the key physical parameters underlying the AGN phenomenon (m_dot and
M_{BH}). There is also suggestive evidence of super-solar abundance in some
NLS1s, possibly as a result of rapid nuclear star formation in the
early/rejuvenated phase of galaxy evolution. The goal of this proposal is to
measure accurately the metallicity in a NLS1 with high resolution X-ray and UV
spectroscopy. Observations of elements with multiple ionization states in the
X-ray band, and abundance sensitive lithium-like nitrogen (NV) in the UV allow
accurate determination of ionization parameter, and thus metallicity. This is not
only important for understanding the NLS1 phenomenon, but also for investigating
evolutionary aspects of AGNs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:30:05.50  -08:59:52.40  MRK 1044              ACIS-S HETG 100.00

===================================================================================

Proposal Number: 04700217            
Proposal Title: A SEARCH FOR PROPER MOTIONS, INTENSITY VARIATIONS, AND SPECTRAL
CHANGES IN THE X-RAY KNOTS OF THE CENTAURUS A JET

PI: RALPH KRAFT                    
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Chandra observations of the Cen A jet reveal a complex X-ray morphology
of bright knots and diffuse emission. We concluded that this X-ray emission is
due to synchrotron radiation from a population of ultrarelativistic electrons. We
propose to reobserve the Cen A X-ray jet to search for intensity variations,
spectral changes, and proper motions in the knots in order to test the
synchrotron emission hypothesis. This followup observation will directly test
this conclusion since spectral and intensity variations are predicted to be
detectable on the time scale of one year due to the short particle lifetimes for
synchrotron emission. We will search for proper motion of the X-ray knots to
independently assess the importance of relativistic effects.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:25:28.70  -43:00:59.70  CENTAURUS A           ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700238            
Proposal Title: STUDY OF A QUASAR AND X-RAY JET AT REDSHIFT Z=5.99

PI: DANIEL SCHWARTZ                
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: This proposal will follow up one of the most exciting recent
discoveries by Chandra: An observation of a probable X-ray jet (Schwartz, 2002b)
associated with the second most distant quasar known, SDSS1306+0356. If powerful
quasar jets emit X-rays via inverse Compton on the Cosmic Microwave Background,
they will be seen with constant surface brightness to as large a redshift at
which they exist. Study of the most distant X-ray jet will help confirm and
characterize this hypothesis, and will bear on the puzzle of how such a powerful
quasar can form so early in the universe. I will release the fits file of data
for the quasar core to the community immediately. (URL:
http://asc.harvard.edu/acis/dschwartz.html)

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:06:09.30  +03:56:43.50  SDSS 1306+0356 JET    ACIS-S NONE 120.00

===================================================================================

Proposal Number: 04700246            
Proposal Title: PROBING INTO THE ENEGETICS IN LOBES OF RADIO GALAXIES.

PI: NAOKI Isobe                    
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Using the inverse Compton (IC) technique, we have found some evidence
that the particle energy tends to dominate the magnetic energy and that the
magnetic field tends to be lower than 3 $\mu$G in these lobes. We propose here
Chandra ACIS-S observations of two lobe-dominant, small, and distant radio
galaxies, 3C 438 and 3C 62, both of which can potentially have sufficiently
stronger magnetic fields than our previous targets under equipartition
assumption. Our objective is to measure energy densities of particles and
magnetic fields in their lobes, by detecting the IC X-rays. We basically expect
that the particle dominance is achieved. However, we cannot rule out a
possibility that an equipartition is realized, since the strong magnetic field
will enhance the SR cooling.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 21:55:52.30  +38:00:29.60  3C 438                ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700249            
Proposal Title: BULK DECELERATION AND PARTICLE ACCELERATION IN THE INNER JETS OF
3C296

PI: MARTIN HARDCASTLE              
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: The twin jets in low-power radio galaxies decelerate from relativistic
to sub-relativistic speeds on scales of 1-10 kpc from the active nucleus,
probably due to entrainment of external matter. All entrainment models require a
steep pressure gradient in the external hot gas. We have already shown that this
model can be applied to the radio galaxy 3C31; we detected the predicted X-ray
emitting gas and measured the pressure gradient, allowing a measurement of jet
energy flux. The same observation showed that X-ray synchrotron emission from the
jet comes from the region of bulk jet deceleration. We now wish to apply this
technique to a second radio galaxy, 3C296, for which we have again predicted the
gas properties near the jet, and where two-sided jet emission is likely to be
detectable.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:16:52.90  +10:48:26.60  3C296                 ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700279            
Proposal Title: X-RAY STRUCTURE OF THE ``BLOW-OUT'' GAS IN TWO COLLISIONAL RING
GALAXIES

PI: JOHN WALLIN                    
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Starburst driven outflows have a great impact on the chemical evolution
of the universe by enriching the IGM with metal rich gas. Since this high
temperature gas escapes from star forming regions, these outflows provide a sink
for both mass and energy in starbursts and may help regulate the star formation
rate. We plan to use Chandra to study two collisional ring galaxies that have
strong evidence of massive starburst driven outflows. By comparing these galaxies
to each other and to the already observed Cartwheel galaxy, we will determine the
composition, temperature, and morphology of the starburst driven outflow, as well
as the primary emission mechanisms within these systems. The high spatial
resolution and sensitivity of Chandra make it ideally suited for this study.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 06:43:00.00  -74:15:00.00  AM0644-741 SW RING    ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04700285            
Proposal Title: STRUCTURES AND SPECTRA OF EXTENDED EMISSION REGIONS IN THREE BL
LAC OBJECTS

PI: MARK BIRKINSHAW                
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Our Chandra study of BL Lac PKS 0521-365 found X-rays from its core,
jet, radio hot-spot, and surrounding atmosphere. The components' structures and
spectra are consistent with our results for radio galaxies, after allowing for
projection effects and a relativistic jet. This agrees with schemes that unify BL
Lac objects with radio galaxies. However, PKS 0521-365 is a radio-selected object
with unusual properties and may not be representative of the BL Lac population,
so we must repeat this work on other sources. We have selected three
representative weak-core BL Lacs for which we request 15 ks ACIS-S observations.
The resulting data will be as detailed as for PKS 0521-365, and so will test
unification models for BL Lacs and radio galaxies and allow detailed study of the
source physics.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:25:50.70  -08:33:43.00  EXO 0423.4-0840       ACIS-S NONE  15.00
 15:17:41.80  -24:22:19.00  AP LIBRAE             ACIS-S NONE  15.00
 23:19:05.80  -42:06:48.00  PKS 2316-423          ACIS-S NONE  15.00

===================================================================================

Proposal Number: 04700288            
Proposal Title: THE PHYSICS OF RELATIVISTIC JETS: DEEP CHANDRA AND HST
OBSERVATIONS OF TWO NEWLY DISCOVERED JETS

PI: RITA SAMBRUNA                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose deep observations of two X-ray-bright jets newly discovered
in our AO2 survey, both with optical counterparts in our HST images. The targets
were selected because of their interesting physical properties. Our goals are to
obtain high-quality X-ray and optical images to study the jet morphologies and
determine the X-ray and optical spectra. Both the morphologies and spectra will
test the origin of X-rays, whether they are from inverse Compton on microwave
background photons vs. direct synchrotron emission, allowing us to determine the
jet physical parameters (Lorentz factors, particle distributions, and beaming) at
different locations in the jet. This has important implications on the modes of
energy transport and dissipation in relativistic jets.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:39:10.70  -13:50:44.00  1136-135              ACIS-S NONE  81.00
 11:53:24.40  +49:31:09.00  1150+495              ACIS-S NONE  70.00

===================================================================================

Proposal Number: 04700315            
Proposal Title: X-RAY VARIABILITY IN THE JET AND CORE OF M87

PI: DANIEL HARRIS                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: M87 is the nearest galaxy with a bright radio / optical / X-ray jet,
and affords an unparalleled opportunity to study extragalactic jet phenomena at
high resolution. We propose the second phase of a long-term variability study of
the core and jet of M87 with 8 ACIS observations at intervals of 1.3 months. We
will correlate X-ray brightness variations in both time and place with
morphological features (shocks within knots) and structural changes (emergence of
new superluminal features) seen in our high resolution radio / optical studies of
the 20" jet. Our ultimate goal is to learn what processes and phyical conditions
are responsible for producing X-rays in AGN jets.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00
 12:30:49.00  +12:23:30.00  M87                   ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700345            
Proposal Title: THE X-RAY JETS, CORES, AND GAS IN FRI RADIO GALAXIES

PI: DIANA WORRALL                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose ACIS imaging and spectroscopy of B2 bright-sample FRI radio
galaxies. Our program has already revealed rich X-ray structure in sample
members, including galaxy-scale gas, compact X-ray cores, and the first
detections of kpc-scale X-ray jets in FRIs more distant than Cen A and M 87.
Evidence is mounting that the jet X-ray emission is synchrotron and the jets
highly shocked. The measurements will further our study of the validity of the
unification of B2 radio galaxies and BL Lac objects, allowing us to test physical
models for the jet emission, compare X-ray core and jet properties with other
indicators of jet speed and orientation, and relate results to the X-ray gas,
which must play an important role in the jet dynamics.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:24:40.50  +26:37:30.50  B2 1422+26B           ACIS-S NONE  10.00
 15:56:03.90  +24:26:52.90  B2 1553+24            ACIS-S NONE  20.00
 16:17:40.50  +35:00:14.70  B2 1615+35            ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04700368            
Proposal Title: DO QSO EXTENDED EMISSION REGIONS RESULT FROM COOLING FLOWS?

PI: ALAN STOCKTON                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Many low-redshift QSOs show strong optical emission extending over
ranges of several tens of kiloparsecs. In general, the ionized gas shows no
evident correlation with either the host galaxy morphology or the radio
structure. While it can be shown that the gas is photoionized by the QSO, the
origin of this gas is still quite uncertain. Crawford, Fabian, and colleagues
have argued strongly that the gas originates in cooling flows, but a close study
of one emission-line region indicates gas pressures inconsistent with such an
origin; however, this conclusion is still somewhat model dependent. We propose
here the first direct test of the presence of cooling flows in groups associated
with 5 QSOs with luminous extended emission regions.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:04:13.70  +76:58:58.10  3C 249.1 FIELD        ACIS-I NONE  25.00
 12:25:39.50  +24:58:36.50  4C 25.40 FIELD        ACIS-I NONE  16.00
 15:14:43.10  +36:50:50.50  4C 37.43 FIELD        ACIS-I NONE  42.00

===================================================================================

Proposal Number: 04700379            
Proposal Title: AN X-RAY MICROLENSING TEST OF THE AU-SCALE CENTRAL STRUCTURE OF
THE QUADRUPLE QUASAR 2237+0305

PI: SHIN MINESHIGE                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose Chandra observation of the gravitationally lensed quasar
Q2237+0305 (Einstein Cross) during a microlensing event. We will monitor the four
images of the QSO from the ground regularly to ascertain the onset of a
microlensing event. As the microlensing event occurs, we will measure the
variations of X-ray intensity and spectra with Chandra and compare with those
taken after the event. Since only a small region of the QSO accretion disk is
strongly magnified during a microlensing event, we will be able to limit the size
of X-ray emitting regions of the QSO and thus the mass which is contained on
scales of several AUs. If observed simultaneously with ground-based telescopes
and with HST, furthermore, we will also be able to probe multi-wavelength
emission properties of QSOs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 22:40:30.30  +03:21:31.00  Q2237+0305            ACIS-S NONE  20.00
 22:40:30.30  +03:21:31.00  Q2237+0305            ACIS-S NONE  20.00
 22:40:30.30  +03:21:31.00  Q2237+0305            ACIS-S NONE  20.00
 22:40:30.30  +03:21:31.00  Q2237+0305            ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04700410            
Proposal Title: AN X-RAY SURVEY OF RADIO-SELECTED LOW-LUMINOSITY AGNS

PI: YUICHI TERASHIMA               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to study a complete sample of radio-selected low-luminosity
AGNs (LLAGNs). The sample is selected from our high-resolution radio observations
of 96 low-luminosity AGNs. The data will be used to (1) measure the spectral
shape of LLAGNs with luminsoities LX~10^40 ergs s^-1, (2) study their radio
loudness, and (3) investigate the nature of accretion disks and jets in LLAGNs.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:32:34.90  +53:04:04.50  NGC 3718              ACIS-S NONE   5.00
 12:09:29.80  +43:41:06.70  NGC 4138              ACIS-S NONE   5.00
 12:12:17.20  +13:12:18.70  NGC 4168              ACIS-S NONE   5.00
 12:15:54.30  +13:08:58.10  NGC 4216              ACIS-S NONE   5.00
 12:28:29.50  +17:05:06.00  NGC 4450              ACIS-S NONE   5.00
 12:52:55.80  +11:13:46.60  NGC 4762              ACIS-S NONE   5.00
 12:53:29.20  +02:10:06.20  NGC 4772              ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700418            
Proposal Title: SEARCHING FOR HIGHLY IONIZED WARM ABSORBERS IN HIGH LUMINOSITY
AGN: 4C 74.26

PI: SHAI KASPI                     
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose 200ks HETGS observation of the radio-loud quasar 4C 74.26 to
search for the presence of highly ionized warm absorbing gas (WA). WAs are
apparently rare in high luminosity sources. Here we propose that, in fact, they
are very common but so far escaped detection by the low resolution ASCA and XMM
detectors since the spectrum of E>1.2 keV WA gas contains mostly narrow
absorption lines and no strong bound-free edges. Chandra/HETG is ideal for
searching and measuring such lines and 4C 74.26 is a very suitable high-L AGN for
testing this hypothesis. Positive line detection will allow measurements of the
physical properties and motion of the WA gas. We will also measure the iron-K
line and search for an X-ray jet along the known radio jet.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 20:42:37.20  +75:08:02.50  4C 74.26              ACIS-S HETG  70.00

===================================================================================

Proposal Number: 04700422            
Proposal Title: THE NATURE OF THE ``COMPOSITE'' SEYFERT/STAR-FORMING GALAXIES

PI: ANNA WOLTER                    
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: An enigmatic class of IR and X-ray luminous sources, named
``Composite'' starburst/Seyfert galaxies, (Moran et al. 1996) have optical
spectra dominated by the features of HII galaxies (plus, in some cases, weak
Seyfert signatures) but X-ray properties typical of Seyferts. The true nature of
this class of objects is still unknown. A detailed Chandra investigation of the
class is necessary. We propose to study the starburst component in NGC 7679, a
very bright Composite discovered by Della Ceca et al. (2001), for which we
already have studied the nuclear X-ray properties with ASCA and BeppoSAX. Four
additional fainter galaxies from the Moran sample will be investigated to
determine detailed X-ray properties, including the presence of a nucleus, of high
absorption and of starburst features.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:10:14.10  +50:10:32.10  IRAS01072+4954        ACIS-I NONE  25.00
 01:34:25.20  -15:49:07.40  IRAS01319-1604        ACIS-I NONE  25.00
 04:41:48.30  -01:18:10.60  IRAS04392-0123        ACIS-I NONE  25.00
 20:07:50.70  +59:38:11.00  IRAS20069+5929        ACIS-I NONE  25.00

===================================================================================

Proposal Number: 04700427            
Proposal Title: MAGNETIC FIELD STRENGTHS IN THE LOBES OF FRII RADIO SOURCES

PI: MARTIN HARDCASTLE              
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: There is good evidence that the magnetic field strengths (B) in the
hotspots of powerful double radio sources are close to their canonical
minimum-energy values, but the situation is much less clear in their lobes. B
there controls the lobe pressure, and so is key to an understanding of radio
source dynamics. The best way to measure B in lobes is to observe inverse-Compton
(IC) scattering of microwave background photons up to X-ray energies. We have
recently found good evidence for this process in deep Chandra observations of
radio sources. We now propose to observe three more objects whose IC emission
should be detected at a high level of confidence. This will give a sample large
and unbiased enough to let us make statements about the field strengths in the
population as a whole.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:13:40.40  +11:12:15.30  3C109                 ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700486            
Proposal Title: QUIESCENT SUPERMASSIVE BLACK HOLES

PI: GIUSEPPINA FABBIANO            
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe 5 elliptical galaxies with ACIS-S to study the
lowest levels of nuclear activity. These galaxies all have measurements of
nuclear black hole masses (ranging from 5E7 to 6E8 M-sun) but no evidence of
radio or optical nuclear activity. The observations will be sensitive to nuclear
emission down to 2E38 erg/s, which is of order 1E-8 L-Edd in our targets, and
estimate the Bondi luminosity down to of order 1E-4 L-Edd. These results will
provide tight constraints on the feeding and energy balance of supermassive black
holes. We will combine these results with archival Chandra data to check the Ho
and Peng radio-loudness/activity relation.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:08:21.00  +10:59:41.00  NGC 821               ACIS-S NONE  15.00
 02:08:21.00  +10:59:41.00  NGC 821               ACIS-S NONE  30.00
 12:30:31.80  +12:29:26.00  NGC 4486B             ACIS-S NONE  40.00
 12:36:26.80  +11:26:21.00  NGC 4564              ACIS-S NONE  20.00
 15:06:00.80  +01:38:02.00  NGC 5845              ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04700491            
Proposal Title: A CHANDRA SURVEY OF INFRARED-BRIGHT LINER GALAXIES

PI: SHOBITA SATYAPAL               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Most previous X-ray studies of LINER galaxies have neglected IR-bright
LINERs. The goal of this proposal is to conduct an X-ray "snapshot" survey using
the Chandra ACIS images of a select sample of nearby IR-bright galaxies. This
sample complements and extends previous X-ray surveys of optically-selected
LINERs. We will: 1) unveil compact hard X-ray nuclear sources and find their
luminosities, 2) compare and contrast the detection rate and luminosities of
nuclear X-ray sources in this study and previous optically-selected studies, and
3) determine if IR spectroscopic detections of high excitation lines from ISO
correlate with nuclear X-ray point source detections. This program will have a
crucial impact on future SIRTF surveys.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:43:01.70  +13:38:34.00  NGC 660               ACIS-S NONE   5.00
 02:41:45.40  +00:26:35.00  NGC1055               ACIS-S NONE   5.00
 10:06:33.60  -29:56:09.00  NGC3125               ACIS-S NONE   5.00
 11:58:31.30  +43:56:49.00  NGC4013               ACIS-S NONE   5.00
 12:06:23.10  +52:42:39.00  NGC4102               ACIS-S NONE   5.00
 12:23:57.90  +16:41:37.00  NGC4350               ACIS-S NONE   5.00
 12:26:56.40  +15:02:50.00  NGC4419               ACIS-S NONE   5.00
 12:34:08.50  +02:39:10.00  NGC4527               ACIS-S NONE   5.00
 12:45:08.70  -00:27:41.00  NGC4666               ACIS-S NONE   5.00
 12:49:57.80  +05:18:39.00  NGC4713               ACIS-S NONE   5.00
 12:50:07.10  +72:52:30.00  NGC4750               ACIS-S NONE   5.00
 13:10:56.20  +37:03:33.00  NGC5005               ACIS-S NONE   5.00
 14:32:05.80  +57:55:17.00  NGC5678               ACIS-S NONE   5.00
 15:34:32.40  +15:11:39.00  NGC5953               ACIS-S NONE   5.00
 16:16:37.50  +68:12:09.00  IC 1218               ACIS-S NONE   5.00
 23:02:00.90  +15:57:53.00  NGC7465               ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700527            
Proposal Title: CHANDRA OBSERVATION OF HS 1603+3820 - A BRIGHT, HIGH REDSHIFT
QUASAR WITH VERY RICH ASSOCIATED ABSORPTION

PI: ADAM DOBRZYCKI                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe with Chandra/ACIS-S3 a bright (B=15.9),
radio-quiet z=2.51 quasar HS 1630+3820. This object has arguably the most
spectacular heavy element absorption spectrum of all known quasars. A tight
cluster of associated absorbers shows a multitude of components from various
species in various ionization stages making it an ideal candidate for the warm
absorber studies. Combination of information provided by X-ray and optical
observations gives a powerful tool to study the physical conditions in quasar
circumnuclear material. This will be one of only a few high-z radio quiet objects
observed in X-rays and the presence or absence of absorption will carry
significant weight in the debate whether absorption properties of radio-loud and
radio-quiet quasars are different.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:04:55.40  +38:12:01.40  HS 1603+3820          ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04700532            
Proposal Title: CONNECTING THE X-RAY AND UV IONIZED ABSORBERS IN MRK 279

PI: JELLE KAASTRA                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose a deep X-ray/UV spectroscopy campaign on the bright Seyfert
1 galaxy Mrk 279, using Chandra LETGS, HST/STIS, and FUSE. Our main scientific
goal is to study the AGN outflow seen as an ionized absorber in this galaxy,
focusing on the crucial connection between the X-ray and UV manifestations of the
outflows. We will map the ionization and velocity structure, measure the
elemental abundances and then determine the mass and kinetic luminosity flux of
the outflow - all stepping stones for studying the importance of outflows in the
evolution of AGN and their host galaxies. In addition we will use the LETGS data
to determine the existence of relativistic CNO emission lines in the spectrum.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:53:03.50  +69:18:29.20  MRK 279               HRC-S  LETG  30.00
 13:53:03.50  +69:18:29.20  MRK 279               HRC-S  LETG 165.00
 13:53:03.50  +69:18:29.20  MRK 279               HRC-S  LETG 165.00

===================================================================================

Proposal Number: 04700543            
Proposal Title: PROBING THE NUCLEAR GEOMETRY OF THE MOST LUMINOUS GALAXY IN THE
LOCAL UNIVERSE WITH CHANDRA

PI: SARAH GALLAGHER                
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Markarian 231, an ultraluminous infrared galaxy, hosts both a luminous
broad absorption line QSO and an active starburst. During our previous ACIS-S3
observation, Mrk 231 demonstrated significant nuclear variability, indicating
that Chandra had probed within light hours of the central black hole. We propose
an additional three 40 ks observations of Mrk 231 strategically spaced to test
our hypothesis that multiple scattered and absorbed lines of sight combine to
account for the nuclear X-ray spectrum. In addition, these observations will
allow us to investigate further the spatial and spectral structure of the
extended galaxy. This remarkable, nearby galaxy offers us the opportunity to
examine in detail phenomena more likely typical of the early universe.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:56:14.20  +56:52:25.20  MARKARIAN 231         ACIS-S NONE  40.00
 12:56:14.20  +56:52:25.20  MARKARIAN 231         ACIS-S NONE  40.00
 12:56:14.20  +56:52:25.20  MARKARIAN 231         ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04700553            
Proposal Title: WHY DO WE SEE BROAD LINES IN X-RAY ABSORBED AGN?

PI: BELINDA WILKES                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: The Chandra X-ray spectra of red, broad-line AGN are hard. This,
combined with their unusually high optical polarization, suggests substantial
obscuration (log NH 21-23/sq cm) toward the nuclear energy source, despite a
clear view of the broad emission line region. Our Cycle 2 Chandra sample was
selected from the Two Micron All-Sky Survey (2MASS) red AGN catalog, a previously
unknown population whose number density rivals that of optically selected AGN. We
propose observations of 20 more and 2 previously undetected 2MASS AGN yielding a
sample of 46, clearly pre-selected for complex absorption and sufficient to study
the relative X-ray and optical obscuration for each AGN class. Results are key to
understanding the AGN population and thus the importance of accretion in the
universe.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:20:31.60  +20:03:27.90  2MASS012031+2003      ACIS-S NONE   4.50
 04:09:24.90  +07:58:56.10  2MASS040925+075856    ACIS-S NONE   3.30
 04:20:32.10  -20:47:59.20  2MASS042032-204759    ACIS-S NONE   4.50
 07:48:25.20  +69:47:12.20  2MASS074825+694712    ACIS-S NONE   4.20
 09:38:44.50  +00:57:15.70  2MASS093844+005716    ACIS-S NONE   1.40
 10:21:26.70  +63:11:30.20  2MASS102127+631130    ACIS-S NONE   6.30
 10:40:43.70  +59:34:09.20  2MASS104044+593409    ACIS-S NONE   1.40
 10:49:43.40  +58:37:50.40  2MASS104943+583750    ACIS-S NONE   5.00
 11:27:51.10  +24:32:08.10  2MASS112751+243208    ACIS-S NONE   4.30
 12:30:15.50  +03:02:54.70  2MASS123016+030255    ACIS-S NONE   3.40
 12:43:49.40  -08:02:48.20  2MASS124349-080248    ACIS-S NONE   4.20
 13:17:04.40  -17:39:12.60  2MASS131704-173913    ACIS-S NONE   3.20
 13:50:37.40  -06:32:15.50  2MASS135037-063216    ACIS-S NONE   1.60
 14:18:50.00  +68:04:09.60  2MASS141850+680410    ACIS-S NONE   3.40
 14:53:31.50  +13:53:58.70  2MASS145331+1353      ACIS-S NONE   9.00
 15:07:06.40  -12:25:15.90  2MASS150706-122516    ACIS-S NONE   2.70
 15:11:41.30  +05:18:09.50  2MASS151141+051810    ACIS-S NONE   2.20
 15:36:27.70  +61:46:41.70  2MASS153628+614642    ACIS-S NONE   4.50
 17:55:03.80  +67:51:08.40  2MASS175504+675108    ACIS-S NONE   4.00
 20:24:20.50  -57:23:43.60  2MASS202421-572344    ACIS-S NONE   3.00
 20:25:50.70  -49:58:12.80  2MASS202551-495813    ACIS-S NONE   3.30
 22:22:21.10  +19:59:47.40  2MASS222221+195947    ACIS-S NONE   3.50

===================================================================================

Proposal Number: 04700556            
Proposal Title: CHANDRA IMAGING OF A COMPLETE SAMPLE OF LOW LUMINOSITY RADIO
GALAXIES:JETS VS. DISKS IN THE BLACK HOLE PARADIGM

PI: CHRISTOPHER O'DEA              
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to obtain ACIS-S observations of 5 low luminosity radio
galaxies. Combined with existing and forthcoming archival data, these sources
enable the creation of an unbiased, complete, distance limited sample of 13 FRI
galaxies. We will use the Chandra observations to construct a broad band spectral
energy distribution of the nucleus in these objects and conduct detailed analyses
of the X-ray properties in order to determine whether they are dominated by
unresolved jets or low efficiency accretion disks (e.g., advection dominated
accretion flows). These results will have fundamental implications for our
understanding of activity in galaxies and the relationships between active and
non-active galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:39:18.60  +03:19:52.00  UGC 408               ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04700574            
Proposal Title: CHANDRA AND XMM-NEWTON TO STUDY THE IONIZATION CONES OF THE
SEYFERT 2 GALAXY NGC 5252

PI: MAURO DADINA                   
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe for 70 ks with both Chandra and XMM-Newton, the
Seyfert 2 galaxy that exhibits the most spectacular optical and IR ionization
cones: NGC 5252. The goals of this proposal are to: i)firmly demonstrate that the
diffuse emission is due to an outflowing gas driven by the central AGN and to
determine its physical characteristics; ii)study the past history of the AGN
activity of NGC5252 on a, potentially, 10^{5-6} years time scale, depending on
the gas outflow velocity; iii)observe in X-rays the ``shadow'' of the dusty torus
of this Seyfert 2. Even if only one of the above mentioned goals is achieved,
this would represent a significant step forward in the comprehension of the
physics of AGN.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:38:15.90  +04:32:33.00  NGC 5252              ACIS-S NONE  70.00

===================================================================================

Proposal Number: 04700577            
Proposal Title: CHANDRA OBSERVATIONS OF A UNIFORM SAMPLE OF FRI GALAXIES

PI: RITA SAMBRUNA                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: An important open question in the study of radio galaxies is the origin
of the FRI and FRII division. Possibilities include jet deceleration in FRI
sources by a hot circumnuclear medium, or intrinsically less powerful jets in
FRIs. To address this issue, we propose ACIS-S observations of a sample of FRIs,
well-matched to our FRII sample from cycle 2. The Chandra observations will: 1)
study the jet X-ray emission, and with available data at longer wavelengths
derive jet Lorentz factor and kinetic power; 2) study the X-ray emission from the
cores, determining the fraction of core power channeled into the jet; and 3)
search for the hot decelerating medium around the cores. Comparing with our AO2
sample of FRIIs, we will unravel the origin of the FRI/II dichotomy.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:24:51.40  +36:22:42.00  1322+36               ACIS-S NONE  30.00
 15:23:26.90  +28:37:32.00  1521+28               ACIS-S NONE  30.00
 22:31:20.50  +39:21:30.00  2229+39               ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04700592            
Proposal Title: ELUSIVE ACTIVE GALACTIC NUCLEI IN STARBURST GALAXIES

PI: ROBERTO MAIOLINO               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: There is growing evidence that the optical classification of active
galaxies is incomplete or even deceiving. We have identified a sample of
starburst galaxies characterized by nuclear radio cores and by nuclear unresolved
mid-IR sources, which strongly suggest the presence of a powerful, buried active
nucleus, although the latter is not identified in the optical. We propose a pilot
program with Chandra on a small subsample of these galaxies aimed at unambiguosly
testing the presence of AGNs in their nuclei by detecting their X-ray signatures.
If these starburst galaxies are confirmed to host buried AGNs this would have
important implications on the estimate of the AGN fraction in the local
Universe.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:54:01.80  +14:58:25.00  UGC2369               ACIS-S NONE  10.00
 08:38:24.10  +25:45:17.00  NGC2623               ACIS-S NONE  20.00
 12:26:54.60  -00:52:39.00  NGC4418               ACIS-S NONE  20.00
 12:48:13.50  -03:20:02.00  NGC4691               ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04700593            
Proposal Title: EFFECTS OF INTERGALACTIC GAS ON STARBURST WINDS

PI: JESPER RASMUSSEN               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Starburst winds are recognized as key elements in galaxy formation and
evolution and as contributors to the chemical enrichment of the intergalactic
medium (IGM) of groups and clusters. In groups the hot IGM may confine the wind,
resulting in much reduced gas loss from the galaxy. No studies have been
undertaken showing the effects of a confining medium on the wind. We propose to
carry out the first observations of the structure of starburst winds in rich
environments with Chandra. Comparison with wind properties of isolated starburst
galaxies will permit us to establish the effects of a confining external medium.
This will provide an important check on our understanding of the chemical and
energetic evolution of bound systems, over scales ranging from small galaxies to
clusters.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:06:25.40  -31:57:15.00  NGC 1800              ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700598            
Proposal Title: CHANDRA SPECTROSCOPY OF THE MOST LUMINOUS NEARBY QUASAR, PDS 456

PI: JAMES REEVES                   
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose a 150 ksec Chandra-HETGS observation of the most luminous
nearby quasar, PDS 456. PDS 456 is the brightest known quasar, twice as luminous
as 3C 273. PDS 456 shows some remarkable properties; broad absorption lines are
present in our XMM-RGS spectrum together with a series of ionized iron K edges
above 7 keV. Thus PDS 456 the ideal candidate to study at the highest resolution
with the HETGS. We will utilize the high spectral resolution of the HETGS to
resolve the absorption line profiles, measuring the velocity widths and outflow
velocities, and hence determine the geometry and location of the outflowing gas.
These measurements could provide evidence for a massive outflow in PDS 456,
requiring that accretion occurs at or exceeding the Eddington rate.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:28:19.80  -14:15:56.00  PDS 456               ACIS-S HETG 150.00

===================================================================================

Proposal Number: 04700635            
Proposal Title: A CHANDRA SURVEY OF THE MOST LUMINOUS QUASARS AT Z>4

PI: CRISTIAN VIGNALI               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose exploratory snapshot observations of 11 of the most luminous
and optically brightest quasars at z>4. Our science goals are (1) to determine
the X-ray fluxes, X-ray luminosities, optical-to-X-ray slopes, and broad-band
spectral energy distributions of these quasars, (2) to constrain X-ray spectral
properties using hardness ratios and stacking analyses, (3) to facilitate
spectroscopic observations with XMM-Newton, and (4) to lay key groundwork for
future high-redshift X-ray efforts with Constellation-X and XEUS. We will obtain
supporting optical spectroscopy with the queue-scheduled 8-m Hobby-Eberly
Telescope. The proposed project will complement our other studies of z>4 quasars
using Chandra, XMM-Newton, and archival data.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:34:13.40  -16:12:04.80  BR 0331-1622          ACIS-S NONE   5.00
 03:55:04.90  -38:11:42.30  BR 0353-3820          ACIS-S NONE   4.00
 04:19:50.90  -57:16:13.10  BR 0418-5723          ACIS-S NONE   4.00
 04:26:10.30  -22:02:17.60  BR 0424-2209          ACIS-S NONE   5.00
 07:47:49.70  +44:34:20.10  PSS 0747+4434         ACIS-S NONE   5.00
 10:58:58.40  +12:45:54.80  PSS 1058+1245         ACIS-S NONE   5.00
 11:20:10.30  -13:46:25.70  BRI 1117-1330         ACIS-S NONE   5.00
 15:06:54.50  +52:20:05.20  PSS 1506+5220         ACIS-S NONE   5.00
 16:46:56.40  +55:14:46.00  PSS 1646+5514         ACIS-S NONE   5.00
 22:16:51.90  -67:14:43.40  BR 2213-6729          ACIS-S NONE   5.00
 23:44:03.20  +03:42:25.50  PSS 2344+0342         ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700354            
Proposal Title: PROBING THE STRUCTURE OF THE NARROW-LINE REGION IN SEYFERT
GALAXIES WITH CXO IMAGING SPECTROSCOPY

PI: STEVEN KRAEMER                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: One of the most striking aspects of the Seyfert phenomenon is the
conical structure of the Narrow Emission Line Regions (NLRs) which, in the
Unified Model, is the result of collimation of the ionizing radiation. Recent HST
imaging spectroscopy shows evidence of accelerating mass outflows and rich
dynamics. The handful of sources with known extended NLRs that have been imaged
to date with CXO reveal tantalizing insights into an NLR/X-ray connection. Here
we propose to obtain 20 ksec images of the 8 next best targets. All of these
Seyferts show [O III] emission on scale > few arcsec, hence easily resolvable by
CXO. Our prime goal is to address whether there is indeed a correlation between
the extended X-ray structure and other properties of the NLR.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:59:58.70  +36:49:13.10  MRK 1066              ACIS-S NONE  20.00
 03:36:45.40  -35:59:56.70  NGC 1386              ACIS-S NONE  20.00
 14:42:23.90  -17:15:11.00  NGC 5728              ACIS-S NONE  20.00
 22:07:02.10  +10:14:00.60  NGC 7212              ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04700707            
Proposal Title: ARE ALL NARROW-LINE SEYFERT 1S ULTRASOFT X-RAY SOURCES?

PI: RICHARD POGGE                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Narrow-Line Seyfert 1s exhibit extreme optical and X-ray properties
thought to reflect high accretion rates (m-dot) onto relatively low-mass black
holes. A defining characteristic of NLS1s is an ultrasoft X-ray spectrum. We have
identified 150 new NLS1s in the SDSS Early Data Release. 50 are detected in the
ROSAT All-Sky Survey and show ultrasoft spectra, but most (2/3) were not
detected. Of these, 17 have brightnesses and redshifts comparable to those
detected, and should have been detected if they too are ultrasoft. This proposal
is to observe 17 undetected NLS1s with ACIS-S to measure their X-ray spectral
slopes. Finding NLS1s that are not ultrasoft has important implications for
understanding how X-ray emission is related to the AGN accretion process.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:23:05.00  -01:07:43.50  SDSS J002305.03-0107  ACIS-S NONE   2.00
 00:27:52.40  +00:26:15.80  SDSS J002752.39+0026  ACIS-S NONE   2.00
 01:56:52.40  -00:12:22.00  SDSS J015652.43-0012  ACIS-S NONE   2.00
 02:27:56.30  +00:57:33.10  SDSS J022756.28+0057  ACIS-S NONE   2.00
 02:28:41.50  +00:52:08.60  SDSS J022841.48+0052  ACIS-S NONE   2.00
 03:14:27.50  -01:11:52.40  SDSS J031427.47-0111  ACIS-S NONE   2.00
 10:13:14.90  -00:52:33.50  SDSS J101314.86-0052  ACIS-S NONE   2.00
 10:42:30.10  +01:02:23.70  SDSS J104230.14+0102  ACIS-S NONE   2.00
 12:14:15.20  +00:55:11.40  SDSS J121415.17+0055  ACIS-S NONE   2.00
 12:59:43.60  +01:02:55.10  SDSS J125943.59+0102  ACIS-S NONE   2.00
 13:11:08.50  +00:31:51.80  SDSS J131108.48+0031  ACIS-S NONE   2.00
 14:12:34.70  -00:34:60.00  SDSS J141234.68-0035  ACIS-S NONE   2.00
 14:30:30.20  -00:11:15.10  SDSS J143030.22-0011  ACIS-S NONE   2.00
 14:49:32.70  +00:22:36.30  SDSS J144932.70+0022  ACIS-S NONE   2.00
 14:51:23.00  -00:06:25.92  SDSS J145123.02-0006  ACIS-S NONE   2.00
 17:05:46.90  +63:10:59.10  SDSS J170546.91+6310  ACIS-S NONE   2.00
 23:38:53.80  +00:48:12.40  SDSS J233853.83+0048  ACIS-S NONE   2.00

===================================================================================

Proposal Number: 04700706            
Proposal Title: X-RAY CONSTRAINTS ON THE STRUCTURE OF THE BROAD EMISSION LINE
REGION IN QUASARS

PI: GORDON RICHARDS                
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose exploratory Chandra observations of a sample of quasars from
the Sloan Digital Sky Survey that were selected according to unique properties of
their broad emission line regions (BELR), specifically the blueshift of the C~IV
emission line with respect to the Mg II emission line. The C~IV blueshift is
likely to be a good diagnostic of the line-of-sight structure of the BELR in
quasars (Richards et al. 2002). Based on correlations with radio data and broad
absorption line properties, we predict that those quasars with larger C~IV
blueshifts may be seen more edge-on such that they are more likely to be obscured
in the X-ray and will have harder X-ray spectra and alpha_ox<-2. These
observations will help to place strong constraints upon the disk-wind model of
the BELR.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:06:54.10  -00:15:33.40  SDSS J000654.11-0015  ACIS-S NONE   4.55
 00:51:02.40  -01:02:44.30  SDSS J005102.42-0102  ACIS-S NONE   3.73
 01:48:12.20  +00:01:53.20  SDSS J014812.23+0001  ACIS-S NONE   3.76
 01:56:50.28  +00:53:08.40  SDSS J015650.28+0053  ACIS-S NONE   5.50
 02:08:45.50  +00:22:36.00  SDSS J020845.53+0022  ACIS-S NONE   3.50
 11:51:15.40  +00:38:26.90  SDSS J115115.38+0038  ACIS-S NONE   3.88

===================================================================================

Proposal Number: 04700768            
Proposal Title: THE X-RAY PROPERTIES OF ULTRALUMINOUS INFRARED GALAXIES (ULIGS)

PI: ANDREW WILSON                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Ultraluminous Infrared Galaxies (ULIGs) are of fundamental importance
in many areas, including their large contribution to the
submillimeter/far-infrared background, the role played by galactic mergers in
forming some or all elliptical galaxies, the triggering of circumnuclear
starbursts and their ``superwinds'', the potential growth and fuelling of massive
black holes and the origin of quasars. Progress in understanding ULIGs is limited
by uncertainty in whether the high luminosity results from a starburst or
accretion onto a massive black hole. We argue that Chandra X-ray observations are
the best means of resolving this controversy and propose a survey of 16 ULIGs
covering the full range of their luminosities and infrared colors.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:21:26.50  -08:39:27.10  F00188-0856           ACIS-S NONE  10.00
 01:02:49.90  -22:21:57.00  F01004-2237           ACIS-S NONE  10.00
 01:59:50.20  +00:23:40.60  F01572+0009           ACIS-S NONE  10.00
 03:54:42.20  +00:37:02.40  Z03521+0028           ACIS-S NONE  10.00
 04:12:19.50  -28:30:24.40  F04103-2838           ACIS-S NONE  10.00
 10:21:42.80  +13:06:55.30  F10190+1322           ACIS-S NONE  10.00
 12:02:26.80  -01:29:15.70  Z11598-0112           ACIS-S NONE  10.00
 12:09:45.10  -05:01:13.90  F12072-0444           ACIS-S NONE  10.00
 12:13:46.10  +02:48:42.40  F12112+0305           ACIS-S NONE  10.00
 15:15:55.20  -20:09:17.00  F15130-1958           ACIS-S NONE  10.00
 15:26:59.90  +35:58:34.00  F15250+3609           ACIS-S NONE  10.00
 16:11:40.40  -01:47:06.50  F16090-0139           ACIS-S NONE  10.00
 17:23:22.20  -00:17:02.10  F17208-0014           ACIS-S NONE  10.00
 23:39:01.20  +36:21:08.60  F23365+3604           ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04700776            
Proposal Title: WHAT KIND OF JETS DOES NATURE MAKE? X-RAY CHARACTERIZATION OF
THE FIRST FLAT SPECTRUM SAMPLE

PI: GIOVANNI FOSSATI               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: The FIRST Flat Spectrum Sample (FFSS) is a deep radio-selected sample,
unbiased with respect to X-ray emission. It is designed to enable us to determine
the true census of the different types of blazars, resolving a long-standing
uncertainty, and the first step towards understanding how Nature makes jets. This
proposal aims to determine the "type" of FIRST blazars, which is easily
determined from radio-optical-X-ray color and basic information about X-ray
spectrum. We propose to obtain fluxes and hardness ratios for a subsample of the
FFSS blazars, for which no X-ray information currently exists. These are largely
radio-bright/X-faint, "red" objects missing from X-ray surveys. With this
information we will be able to answer the key question: "What kind of jets does
Nature make?"

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:21:32.00  +27:42:12.90  87GB 0718+2748        ACIS-S NONE   3.50
 07:29:47.60  +49:53:17.10  TXS 0726+499          ACIS-S NONE   6.00
 07:59:28.30  +30:10:29.00  TXS 0756+303          ACIS-S NONE   4.50
 08:20:20.20  +36:40:04.80  FIRST J0820+3640      ACIS-S NONE   7.50
 08:24:39.00  +40:57:08.20  TXS 0821+411          ACIS-S NONE   3.00
 08:53:17.80  +28:13:50.00  87GB 0850+2825        ACIS-S NONE   4.00
 09:23:48.00  +31:07:53.90  B2 0920+31B           ACIS-S NONE   5.00
 09:41:49.70  +41:21:04.60  FIRST J0941+4121      ACIS-S NONE   8.00
 13:01:32.60  +46:34:03.00  TXS 1259+468          ACIS-S NONE   3.50
 13:44:43.70  +55:03:00.60  87GB 1342+5518        ACIS-S NONE   3.50
 14:30:40.60  +36:49:04.10  TXS 1428+370          ACIS-S NONE   4.00
 16:15:41.20  +47:11:12.00  B3 1614+473           ACIS-S NONE   4.00
 17:01:24.60  +39:54:37.10  B3 1659+399           ACIS-S NONE   3.50

===================================================================================

Proposal Number: 04700805            
Proposal Title: TYPE II QUASARS AMONG Z>4 STRONG LYMAN ALPHA SOURCES

PI: SANGEETA MALHOTRA              
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Strong Lyman-alpha emission is expected both from primordial galaxies
and from the type II quasars required to explain the hard x-ray background. We
have identified ~300 Ly-alpha sources at redshifts 4.5 and 5.7. About 60% of
these show rest equivalent widths >200 Angstrom, which requires active nuclei, or
extreme populations of massive stars. Our Ly-alpha survey (LALA) is a unique
resource for determining the space density of type II quasars at high z
efficiently. The large fields of ACIS and LALA will allow us to observe 60
ly-alpha emitters, including the brightest narrow line Ly-alpha emitter with
EW=660. This will have implications for composition of the X-ray background,
background radiation at other wavelengths, and structure formation (stars vs
black holes) in the early universe.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:04:44.25  -05:05:33.82  LALA CETUS FIELD/LAL  ACIS-I NONE  15.00
 02:04:44.25  -05:05:33.82  LALA CETUS FIELD/LAL  ACIS-I NONE 165.00

===================================================================================

Proposal Number: 04700828            
Proposal Title: THE ACTIVE NUCLEUS AND 200-KPC X-RAY JET IN NGC 6251

PI: MARTIN HARDCASTLE              
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: The jet of the FRI radio galaxy NGC 6251 is known to be an X-ray source
on scales out to 200 kpc from the nucleus, making it the largest-scale FRI X-ray
jet known. However, existing observations do not provide adequate information on
the structure or spectrum of any of the X-ray jet components or on the spectrum
of the active nucleus. We propose to make a sensitive observation of this unique
object. We will measure the X-ray spectrum at multiple points along the jet to
determine the emission mechanism and search for differences in particle
acceleration as a function of distance. We will also determine whether the hot
gas around the jet has pressure sufficient to confine it, and we will make a good
spectrum of the X-ray nucleus for comparison with radio and optical
observations.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:32:31.90  +82:32:16.40  NGC 6251              ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04700839            
Proposal Title: CHANDRA OBSERVATIONS OF THE FIRST SAMPLE OF RADIO-LOUD NARROW
LINE SEYFERT I GALAXIES

PI: SALLY LAURENT-MUEHLEISEN       
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: Very few radio-loud Narrow Line Seyfert I galaxies (NLS1s) are known.
These objects, however, present an interesting dilemma: radio luminosity in
quasars correlates well with black hole mass, but the leading NLS1 unification
theory hypothesizes that NLS1s differ from classical Seyferts by having smaller
black holes which accrete near the Eddington limit. We have created a new sample
of exclusively radio-loud (and luminous) NLS1s and propose to study their X-ray
properties with Chandra. Specifically, we propose to measure the X-ray spectral
slope for 11 radio-loud NLS1s and to compare our results with those for samples
of radio-quiet NLS1s, classical Seyferts and radio-loud and -quiet AGN in order
to determine what physical property unifies NLS1s and other classes of AGN.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:00:32.20  -02:00:46.30  FIRST J010032-020046  ACIS-S NONE  10.00
 07:06:25.10  +39:01:51.60  FIRST J070625+390151  ACIS-S NONE  10.00
 07:23:02.30  +50:54:48.00  FIRST J072302+505448  ACIS-S NONE  10.00
 07:44:02.20  +51:49:17.50  FIRST J074402+514917  ACIS-S NONE  10.00
 10:38:59.60  +42:27:42.00  FIRST J103859+422742  ACIS-S NONE  10.00
 11:02:23.40  +22:39:20.70  FIRST J110223+223920  ACIS-S NONE  10.00
 11:40:47.90  +46:22:04.80  FIRST J114047+462204  ACIS-S NONE  12.00
 12:27:49.20  +32:14:59.00  FIRST J122749+321459  ACIS-S NONE   3.00
 14:21:14.10  +28:24:52.20  FIRST J142114+282452  ACIS-S NONE  10.00
 16:29:01.30  +40:07:59.60  FIRST J162901+400759  ACIS-S NONE   3.00
 16:44:42.50  +26:19:13.20  FIRST J164442+261913  ACIS-S NONE   3.00

===================================================================================

Proposal Number: 04700841            
Proposal Title: OBSCURED HIGH REDSHIFT RADIO GALAXIES

PI: WIL VAN BREUGEL                
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe 3 enigmatic Compact Ultra Steep Spectrum (CUSS)
radio sources with Chandra + ACIS-S. They are identified with very faint
multi-component galaxies or small groups, have defeated optical and near-IR
spectroscopic (emission-line) detection, are compact radio sources and strong
sub-mm/mm emitters. Our Chandra observations would allow us to determine whether
they are members of the elusive class of heavily obscured (radio-loud) type II
quasars. This would not only deepen our understanding of steep spectrum selected
radio samples, but might also provide a possible link to studies of the X-ray
cosmological background through radio source identification at much lower flux
densities in the future.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:05:47.40  +35:25:13.40  J0305+3525            ACIS-S NONE  13.00
 13:14:17.90  +36:49:14.60  J1314+3649            ACIS-S NONE   9.00
 20:44:57.80  +70:44:03.80  J2044+7044            ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700849            
Proposal Title: X-RAYS FROM BROAD ABSORPTION LINE QUASARS WITH EXTREME
PROPERTIES

PI: PATRICK HALL                   
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose short exploratory observations of 3 Low-Ionization Broad
Absorption Line Quasars with unusual properties. One is the most radio-loud LoBAL
quasar known and only the second classical radio double BAL quasar known. Since
RLQs are X-ray brighter than RQQs, this BAL quasar should be intrinsically X-ray
bright. The second target has LoBAL troughs spanning at least 13000 km/s, with
90% absorption of its flux blueward of MgII. However, since most BAL troughs are
saturated, its BAL gas column density may be the same as in less extreme LoBAL
quasars; X-ray observations can test this possibility. The last target is a
unique bright LoBAL quasar with stronger FeIII than FeII absorption; X-ray data
probing absorption from different ionization states will help understand its
unique spectrum.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:00:00.60  +00:48:28.00  SDSS J0300+0048       ACIS-S NONE   5.00
 11:41:11.60  -01:43:07.70  UN J1141-0143         ACIS-S NONE  10.00
 22:15:11.90  -00:45:49.90  SDSS J2215-0045       ACIS-S NONE   5.00

===================================================================================

Proposal Number: 04700855            
Proposal Title: HIGH RESOLUTION SPECTROSCOPY OF A BLAZAR IN OUTBURST: JET
ENVIRONMENT AND THE INTERGALACTIC MEDIUM

PI: FABRIZIO NICASTRO              
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe up to 3 Blazars in exceptionally high states for
100 ks each with the Chandra ACIS-LETG, to study efficiently both their jet
environment as well as possible intervening high ionization metal absorption
systems. The observations will be triggered by the Rossi-XTE ASM and will require
rapid response times. This observing strategy will guarantee exceptionally high
quality spectra containing at least one milion counts in the first orders of the
LETGS.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
                            BLAZAR IN OUTBURST    ACIS-S LETG 100.00
 11:04:27.30  +38:12:31.80  MRK 421               ACIS-S LETG 100.00

===================================================================================

Proposal Number: 04700866            
Proposal Title: X-RAY TRACE OF THE EARLY RISE OF THE QUASAR POPULATION

PI: TAKAMITSU MIYAJI               
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe quasars with z>2.7 selected from the Palomer
Transit Grism Survey (PTGS), which has provided the best example of rising number
density of luminous quasars at 2.7 1.86) lensed
quasars with magnification factors ranging between a few and ~ 100. The proposed
sample will double the number of detected high z lensed quasars. The
magnification effect will allow us to search for changes in quasar properties,
such as the accretion process over four orders of magnitude in intrinsic X-ray
luminosity.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:10:56.90  +09:54:26.80  Q1208+1011            ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04700057            
Proposal Title: A STUDY OF QUASAR EVOLUTION WITH THE AID OF LENSING

PI: GORDON GARMIRE                 
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose to observe a sample of high redshift (z > 1.86) lensed
quasars with magnification factors ranging between a few and ~ 100. The proposed
sample will double the number of detected high z lensed quasars. The
magnification effect will allow us to search for changes in quasar properties,
such as the accretion process over four orders of magnitude in intrinsic X-ray
luminosity.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:21:39.10  +12:17:29.00  HS0818+1227           ACIS-S NONE  20.00
 10:12:15.70  -03:07:02.00  LBSQ1009-0252         ACIS-S NONE  10.00

===================================================================================

Proposal Number: 04701017            
Proposal Title: SIMULTANEOUS XMM-NEWTON AND CXO/HETGS OBSERVATIONS OF SEYFERT 1
GALAXIES

PI: IAN GEORGE                     
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We propose simultaneous XMM-Newton and CXO observations of two bright
Seyfert 1 galaxies as part of a long term programme to ensure that such
observations are performed for the 20 brightest Seyfert 1 galaxies during the
l;ifetimes of the missions. The targets, NGC 526A and MCG-2-58-22, were selected
since they are the brightest members of the sample for which neither XMM-Netwon
now CXO/HETGS observations have been made/scheduled with adequate
signal-to=noise. The proposed observations will anable a number of important
scientific issues to be addressed. For example, we will be able to decouple the
narrow and broad Fe K alpha line components: a crucial step in determining the
real importance of relativisitc effects close to a black hole.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:23:54.40  -35:03:55.70  NGC 526A              ACIS-S HETG  60.00

===================================================================================

Proposal Number: 04701018            
Proposal Title: DECONVOLVING THE FE KA LINE IN NGC 2110

PI: TRACEY TURNER                  
Subject Category: ACTIVE GALAXIES AND QUASARS                       

Abstract: We request simultaneous Chandra (100 ks) and XMM-Newton (50 ks)
observation of NGC 2110. The combined data will allow us to tackle key issues
which cannot be broached using either dataset alone. The primary goal of
deconvolving the broad and narrow components of the Fe Ka line requires
simultaneous observation by Chandra and XMM, as recent data have indicated narrow
components of Fe Ka to vary. Thus, only simultaneous data will allow us to
resolve the controversy regarding the diskline in type 2 AGN. The proposed data
will also allow tight constraints on the absorbing gas.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:52:11.40  -07:27:23.00  NGC 2110              ACIS-S HETG 100.00


***********************************************************************************
CLUSTERS OF GALAXIES                              
--------------------------------------------------

===================================================================================

Proposal Number: 04800001            
Proposal Title: THE HOST GALAXIES OF TIME DELAY LENSES: AN INDEPENDENT ROUTE TO
THE HUBBLE CONSTANT

PI: CHRISTOPHER KOCHANEK           
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Because of its importance in setting the distance scale, the time scale
and in estimating cosmological parameters from the CMB, astronomy needs an
estimate of the Hubble constant independent of the local distance scale and its
systematic problems. This can be achieved using gravitational lenses with time
delay measurements given enough constraints on the gravitational potential of the
lens. We will use deep NICMOS observations of the lensed quasar host galaxies in
7 gravitational lenses with time delay measurements to obtain the necessary
constraints, determine the dark matter distribution and estimate H0. We also
request 30 ksec Chandra ACIS images for each of the 2 systems lacking them
(B1608+656 and B1600+434) to measure the mass in nearby or surrounding groups and
clusters.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:01:40.40  +43:16:47.80  B1600+434             ACIS-S NONE  30.00
 16:09:14.00  +65:32:29.00  B1608+656             ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04800012            
Proposal Title: A HIGH-REDSHIFT (Z=0.95) CLUSTER REVEALED BY A FIRST BENT-DOUBLE
RADIO SOURCE

PI: CRAIG SARAZIN                  
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Bent double-lobed radio sources achieve their morphologies from the
relative motion between their host galaxies and the dense ICM associated with the
clusters in which they are embedded. Since many of the radio galaxies are hosted
by cD ellipticals, thought to be at the bottom of potential wells, the relative
motion may be the result of a recent cluster-cluster merger causing bulk motion
of the ICM. We have selected a sample of 384 bent doubles from the VLA FIRST
survey, and propose here to observe the most distant confirmed object in our
sample at z=0.95 (10 spectroscopic redshifts). Measurement of the mass and
temperature of this cluster is an important complement to those values measured
from clusters selected from optical and X-ray surveys and will help to constrain
Omega.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:37:33.80  +30:00:10.00  BD1137+3000           ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04800055            
Proposal Title: CLUSTER - CL1641+4001

PI: STEPHEN MURRAY                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: This object will complete a flux-limited (fx>2e-13) sample of distant
(z>0.4) clusters of galaxies derived from the ROSAT-CfA cluster survey and
observed within the Chandra GTO program. The sample will be used for cosmological
constraints using the cluster temperature function evolution.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 16:41:52.50  +40:01:29.00  CL1641+4001           ACIS-I NONE  50.00

===================================================================================

Proposal Number: 04800056            
Proposal Title: SELF-INTERACTING DARK MATTER HALOS ON SUB-CLUSTER SCALES

PI: GORDON GARMIRE                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Search NGC1132 for intensity profile stude to search for Dark Matter
effects. This extends earlier observation of 14ks.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 02:52:52.00  -01:16:29.60  NGC 1132              ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04800149            
Proposal Title: DISENTANGLING THE INFLUENCE OF COSMOLOGICAL PARAMETERS AND
STRUCTURE FORMATION IN THE UNIVERSE WITH DISTANT CLUSTERS OF

PI: MELVILLE ULMER                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: The detection and study of distant clusters with redshifts beyond unity
is very important to study cluster evolution, which is strongly linked to
structure formation and cosmological parameters. In a search for distant clusters
in ROSAT PSPC pointings we recently found two very promising high redshift
cluster candidates with estimated redshifts between z = 1.2--1.7 and
corresponding bolometric X-ray luminosities of about 1E45 erg/sec. We propose to
observe these two candidates with Chandra and XMM-Newton to determine their form,
temperature and redshift, which will allow us to disentangle the interplay
between cosmological parameters and structure formation.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:05:52.60  +44:29:10.00  RXJ1205               ACIS-S NONE  30.00

===================================================================================

Proposal Number: 04800167            
Proposal Title: THE MASS DISTRUBUTION IN THE MOST DISTANT VIRIALIZED GALAXY
CLUSTER KNOWN

PI: HARALD EBELING                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose deep Chandra/ACIS-I and HST/ACS observations of the very
distant, X-ray luminous cluster ClJ1415.1+3612 to measure its gas and dark matter
distribution from X-ray and gravitational lensing data, and to conduct a
multi-color morphological analysis of the cluster's galaxy population. At z=1.013
this exceptional system is the most distant, massive (kT>7 keV) cluster known.
Evidence of strong lensing in the cluster core from ground-based imaging, the
presence of emission lines characteristic of a cooling flow in the spectrum of
the cD galaxy, and an undisturbed X-ray morphology in a ROSAT observation all
suggest a virialized system. With only one comparable cluster currently known,
ClJ1415.1+3612 is a prime target for cosmological and physical structure
formation studies at z~1.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:15:11.20  +36:12:04.00  CLJ1415.1+3612        ACIS-I NONE  94.00

===================================================================================

Proposal Number: 04800192            
Proposal Title: SPATIALLY RESOLVED OBSERVATION OF A MAJOR MERGING EVENT IN THE
SHAPLEY SUPERCLUSTER

PI: STEFANO ETTORI                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to fully exploit the Chandra unique capability in spatially
resolving (i) the emission, (ii) the temperature and (iii) the metal abundance
distribution of the intra/inter cluster plasma on arcsecs scale for the filament
that includes 3 bright clusters and 2 groups of galaxies in the core of the
Shapley Supercluster, the largest and richest system in the nearby Universe

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:23:49.40  -31:43:59.00  A3556                 ACIS-I NONE  20.00
 13:29:55.10  -31:33:53.00  SC1327-312            ACIS-I NONE  20.00
 13:31:27.80  -31:49:08.00  SC1329-313            ACIS-I NONE  20.00
 13:33:36.00  -31:40:27.00  A3562                 ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04800280            
Proposal Title: SURVEYING THE FORNAX CLUSTER OF GALAXIES

PI: CALEB SCHARF                   
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Low luminosity X-ray clusters of galaxies are the dominant reservoirs
of bound matter in the Universe. At a distance of 20 Mpc, the Fornax cluster has
an immense collection of the highest quality multi-wavelength data, making it an
exceptional laboratory for studying the astrophysics of these systems. We propose
surveying an inner region of Fornax with Chandra's unprecedented combination of
spatial and spectral resolution to produce a keystone dataset with a long-term
legacy. We will investigate the interactions of cluster galaxies with the ICM,
their populations of globular clusters, search for emission from dwarf galaxies,
ultra-compact systems, and intra-cluster planetary nebulae, and compare the ICM
metal contents with the detailed history of stellar populations in Fornax.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 03:35:45.90  -35:15:45.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:36:40.50  -35:27:01.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:36:40.50  -35:04:49.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:37:35.10  -35:16:03.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:37:35.30  -35:37:57.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:38:30.00  -35:49:04.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:38:30.00  -35:27:04.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:38:58.30  -35:10:46.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:39:24.60  -35:38:09.00  FORNAX CLUSTER        ACIS-I NONE  50.00
 03:39:53.30  -35:21:50.00  FORNAX CLUSTER        ACIS-I NONE  50.00

===================================================================================

Proposal Number: 04800327            
Proposal Title: A SEARCH FOR FOSSILS OF FEEDBACK IN THREE RADIO- AND
OPTICALLY-QUIET COOLING FLOWS

PI: MEGAN DONAHUE                  
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: In order to isolate the effects of feedback from radio sources and star
formation in cluster coooling flows, we have identified a sample of 5 cooling
flow clusters with high inferred cooling rates which do not show evidence for a
powerful radio source nor optical emission line nebulae, which are commonly
present in such systems. We propose to observe 3 of these clusters with ACIS-S to
re-derive improved cooling rates, density distributions, and temperature
profiles, and to look for evidence of previous feedback in the form of ``ghost
cavities''. Identifying the characteristics these clusters share and do not share
with the more common variety of cooling flows (of which there are at least 19
archived examples) is key to solving the ``cooling flow'' problem.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:58:41.60  -01:45:42.90  ABELL 1650            ACIS-S NONE  30.00
 17:02:42.60  +34:03:37.40  ABELL 2244            ACIS-S NONE  60.00

===================================================================================

Proposal Number: 04800347            
Proposal Title: THE HIFLUGCS CLUSTER SURVEY: A CORNERSTONE FOR COSMOLOGY

PI: CRAIG SARAZIN                  
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Statistical studies of galaxy clusters yield tight constraints on
cosmological parameters, the formation of large scale structure, and the nature
of dark matter/energy. Dominant sources of uncertainty today are systematic
effects, affecting flux, gas temperature, and mass measurements. We propose a
detailed systematic investigation of processes in the very cluster centers
requiring Chandra and a complete statistical sample of bright nearby clusters.
HIFLUGCS is the best currently available local cluster sample in terms of
homogeneous X-ray selection based on the ROSAT All-Sky Survey, completeness,
size, and availability of a large fraction of high quality observations.
Analyzing the Chandra observations for this sample we will constrain the density
of the universe to competitive accuracy.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 00:56:16.13  -01:15:18.40  A0119                 ACIS-I NONE  12.00
 02:57:41.58  +06:01:28.81  A0400                 ACIS-I NONE  22.00
 03:41:17.53  +15:23:47.50  IIIZW54               ACIS-I NONE  24.00
 04:25:51.30  -08:33:38.00  EXO0422               ACIS-I NONE  10.00
 12:17:41.30  +03:39:37.60  ZWCL1215              ACIS-I NONE  12.00
 12:59:22.45  -04:11:46.00  A1651                 ACIS-I NONE  10.00
 13:26:53.70  -27:10:35.50  A1736                 ACIS-I NONE  15.00
 15:23:05.35  +08:36:32.00  A2063                 ACIS-I NONE   9.00
 23:47:42.80  -28:08:35.00  A4038                 ACIS-I NONE   6.00

===================================================================================

Proposal Number: 04800391            
Proposal Title: OBSERVING THE X-RAY LUMINOUS GALAXY CORONAE IN A1367

PI: ALEXEY VIKHLININ               
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: The 40 ksec CHANDRA ACIS-S observation of A1367 reveals luminous X-ray
coronae in three galaxies (NGC 3842, NGC 3837, and UGC 6697) belonging to this
dynamically young cluster. We propose a follow-up 50 ksec ACIS-S observation
centered at those galaxies. The superior angular resolution of CHANDRA will allow
us to study the physical properties of the interstellar medium and its
interaction with the cluster gas. The implications of this observation will be
very important for understanding the role of heat conduction and magnetic field
in galaxy clusters. The proposed investigations are not possible with the
existing data because the galaxies are at the off-axis angle over 14 arcmin.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:43:54.90  +19:56:30.00  A1367 NW              ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04800402            
Proposal Title: INTRACLUSTER GAS BULK VELOCITIES IN THE CENTAURUS CLUSTER

PI: RENATO DUPKE                   
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We have recently found significant bulk velocities on the order of 2000
km/s in the ICM of 2 galaxy clusters with ASCA. Such high gas velocities have an
impact on our our understanding of formation and evolution of clusters of
galaxies as well as in determining ICM fundamental physical characteristics such
as mass, energy and metal abundances. Therefore, independent confirmation and
expansion of this discovery is crucial. The excellent stability of ACIS gain
makes Chandra ideal to make such observation. We propose to build a gas velocity
map of A3526 by measuring Doppler shifts of X-ray spectral lines at different
spatial regions. To eliminate effects of gain fluctuations we ask for 2
consecutive 35 ksec observations offset by 8'.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:48:41.00  -41:22:36.00  ABELL 3526            ACIS-S NONE  35.00
 12:49:05.00  -41:16:17.00  ABELL 3526            ACIS-S NONE  35.00

===================================================================================

Proposal Number: 04800425            
Proposal Title: STUDY OF A COLD FRONT IN A MASSIVE COOLING FLOW CLUSTER OF
GALAXIES WITH STRONG LENSING

PI: PASQUALE MAZZOTTA              
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Using the data contained in the Chandra archive we discovered a cold
front in the atmosphere of the cluster of galaxies MS1455.0+2232. The importance
of this finding is related to the fact that: i) it represents the biggest edge
observed so far; ii) it lies in one of the most massive cooling flow clusters
known; iii) the optical image of the cluster hosts a lensed arc inside the cold
front sector. Moreover the X-ray and the lensig estimates show a discrepancy of a
factor 1.8. It has been argued that cold fronts may both influence the
development of cooling flows as well as to induce a mass bias that could explain
point iii) above. We propose a deep Chandra follow-up of MS1455.0+2232 that will
shade light on the above issues.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:57:15.00  +22:20:31.00  MS1455.0+2232         ACIS-I NONE  95.00

===================================================================================

Proposal Number: 04800426            
Proposal Title: A DETAILED STUDY OF THE LUMINOUS LENSING CLUSTER ABELL 2390

PI: STEVEN ALLEN                   
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We request a deep 100 ks observation of Abell 2390. This system has the
best lensing data of all regular, relaxed clusters of galaxies, in addition to
exceptionally high quality optical-dynamical data. The proposed observations will
allow us to constrain the projected mass distribution in the cluster core to an
accuracy <= 10 per cent, providing a rigorous test of the hydrostatic assumption.
We will be able to distinguish between different theoretical models for the slope
of the mass profile in the cluster core. The data will provide robust results on
the variation of the X-ray gas/total mass ratio as a function of radius.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 21:53:36.80  +17:41:44.00  ABELL 2390            ACIS-S NONE 100.00

===================================================================================

Proposal Number: 04800451            
Proposal Title: ENTROPY FLUCTUATIONS IN GALAXY GROUPS

PI: TREVOR PONMAN                  
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: It is clear from relationships between the morphology of galaxies in
groups and the presence of hot intergalactic gas, that the state of the IGM is
related to group evolution. Recent cosmological simulations show that long-lived
features in the gas temperature and entropy distribution result from the
individual evolutionary histories of groups. We aim to map such features with
Chandra in three groups for which we find evidence of interesting features in
ROSAT data. Combining these data with an ensemble of results from our
cosmological simulations will enable us to use dispersion about the mean entropy
properties for the first time, to constrain the individual histories of groups,
and to explore the impact of these histories on the properties of their
galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 17:15:22.90  +57:24:40.00  NGC 6338              ACIS-I NONE  50.00

===================================================================================

Proposal Number: 04800458            
Proposal Title: COSMOLOGICAL CONSTRAINTS FROM THE X-RAY GAS MASS FRACTION IN THE
MOST LUMINOUS, RELAXED CLUSTERS

PI: STEVEN ALLEN                   
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to observe the most X-ray luminous, relaxed clusters of
galaxies at high redshifts to measure the apparent variation of the X-ray gas
mass fraction with redshift and thereby constrain the present value of the
Cosmological Constant, Omega_Lambda. This method, which we have recently applied
to Chandra data for lower-redshift clusters, also provides the best available
constraint on the mean mass density of the Universe, Omega_M. The proposed
observations will allow us to constrain Omega_Lambda to an accuracy of 30%, and
provide a direct detection of the effects of the Constant on the geometry of the
Universe at 2-3 sigma significance. This would be the first independent
confirmation of the SNIa results on Omega_Lambda and represent a major step
forwards in cosmological studies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:23:47.80  +24:04:41.40  MACS1423.8+2404       ACIS-S NONE 120.00

===================================================================================

Proposal Number: 04800361            
Proposal Title: A CHANDRA SURVEY OF A UNIFORMLY-SELECTED SAMPLE OF HIGH-REDSHIFT
GALAXY CLUSTERS

PI: GORDON GARMIRE                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Although galaxy clusters are the largest collapsed objects known, and
therefore must have formed relatively recently, there is so far little
quantitative evidence for evolution of cluster X-ray emission. To address this
puzzle, we propose an X-ray survey of clusters at redshifts 0.8 < z < 1.1
discovered in the Red Cluster Sequence (RCS) survey. Our ultimate aim is to
obtain sufficient Chandra exposure to measure the X-ray luminosity (Lx) and
integrated temperature (T) of every RCS cluster with z>0.8. These data will
provide constraints on the evolution of both the Lx-T relation and the morphology
of cluster X-ray emission.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:39:38.00  -29:04:55.20  RCS0439.6-2905        ACIS-S NONE  85.00

===================================================================================

Proposal Number: 04800521            
Proposal Title: REDUCED COOLING & FEEDBACK IN CLUSTER COOLING FLOWS

PI: BRIAN MCNAMARA                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to observe three galaxy clusters to examine the effects of
energy feedback into the cooling intracluster medium from supernovae, radio
sources, and cluster mergers. The observations are designed to test cooling flow
models by comparing the X-ray cooling rates to star formation rates on fine
spatial scales. The observations will test the universality of emerging
correlations between strong nebular emission, sites of massive star formation,
and bright X-ray structures in central cluster galaxies, where enhanced cooling
may be occurring. The data will allow us to evaluate the likelihood that the
large star formation rates and Balmer emission in the central galaxies are
related or unrelated to cooling flows.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:43:09.70  +02:10:18.00  MS0440.5+0204         ACIS-S NONE  60.00
 07:41:50.20  +74:14:51.00  MS0735.6+7421         ACIS-S NONE  50.00

===================================================================================

Proposal Number: 04800566            
Proposal Title: THE PHYSICAL PROPERTIES OF A MASSIVE CLUSTER AT Z=1.235

PI: PIERO ROSATI                   
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to obtain ACIS-I deep imaging of one of the highest redshift
massive clusters known to date, RDCS1252-29 at z=1.235. This is the most X-ray
luminous of the four clusters at z>1 discovered in the RDCS. Extensive VLT
spectroscopy and the presence of strong lensing features suggest a high velocity
dispersion (~900 km/s). In combination with scheduled HST/ACS observations, the
Chandra data will allow us to measure the physical properties of this remote
system. This will include: 1) studying the gas spatial distribution, to be
compared with the light distribution from the cluster galaxies; 2) measuring the
ICM temperature; 3) determining the cluster mass, to be compared with independent
estimates from weak/strong lensing analysis, and velocity dispersion of member
galaxies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:52:54.50  -29:27:18.00  RDCS1252-29           ACIS-I NONE  25.00
 12:52:54.50  -29:27:18.00  RDCS1252-29           ACIS-I NONE 165.00

===================================================================================

Proposal Number: 04800683            
Proposal Title: AN X-RAY STUDY OF A LENS-SELECTED GROUP OF GALAXIES AT Z=0.29

PI: CHRISTOPHER FASSNACHT          
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We are conducting a program to study evolution in the properties of
galaxy groups. To create our sample, we are using an exciting new method to find
moderate-to-high redshift groups -- through their association with gravitational
lenses. We request Chandra time to observe the largest (in terms of confirmed
members) and best-studied lens-selected group. We will use the observations to
measure the group properties with high precision, thereby reducing the
uncertainty in the group's effect on the lensing gravitation potential by at
least a factor of two and improving the determination of H_0 with this lens
system. In addition, we will compare the group properties to those of local
groups and massive clusters at similar redshifts and study the X-ray properties
of the lensed quasar.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:16:05.00  +47:09:04.90  CLASS B0712+472       ACIS-S NONE 100.00

===================================================================================

Proposal Number: 04800694            
Proposal Title: THE ASSEMBLY OF A GIANT GALAXY CLUSTER AT Z=0.545

PI: HARALD EBELING                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose a deep ACIS-I observation of MACSJ0717.5+3745, the most
X-ray luminous cluster known at z>0.5. Its hugely disturbed X-ray morphology
still reflecting the aftermath of a previous major merger event, the system is
bound to grow yet more massive when it accretes a companion cluster currently
1.3/h Mpc away in the plane of the sky. From extensive follow-up observations
(short ACIS observation, deep optical imaging, redshift survey, weak-lensing
study, SZ observation) we find strong evidence for a profound displacement of the
system's dark matter, gas and galaxy distributions. To complete an investigation
offering unprecedented insight into the assembly of a giant cluster through a
series of merger events we wish to measure the gas and temperature distribution
in the cluster core.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:17:31.00  +37:45:30.00  MACSJ0717.5+3745      ACIS-I NONE  60.00

===================================================================================

Proposal Number: 04800713            
Proposal Title: CHANDRA OBSERVATIONS OF A PROTOCLUSTER AT Z = 1.31

PI: MICHAEL LIU                    
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to obtain modest ACIS-I imaging of a high-redshift
protocluster. This field was discovered from an optical/near-IR imaging survey
and possesses a large excess of extremely red objects (EROs). Deep Keck
spectroscopy confirms the EROs are old galaxies at z=1.31, making our target the
highest redshift field of old galaxies known. Based on the field's morphology, we
suspect it is not gravitationally-bound, but rather still in the process of
formation. Hence, detection of its diffuse X-ray ICM would best be suited to
XMM-Newton observations. Here we propose to employ Chandra's superb angular
resolution to search for bright point sources in the field. This provides a pilot
study for this protocluster, laying the necessary groundwork for future, deeper
X-ray studies.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 12:15:49.80  -00:34:32.00  Q1213-0017            ACIS-I NONE  45.00

===================================================================================

Proposal Number: 04800749            
Proposal Title: CHANDRA OBSERVATIONS OF TWO DYNAMICALLY YOUNG GALAXY CLUSTERS
A2069 AND A2384

PI: MAXIM MARKEVITCH               
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: X-ray elongated cluster is an interesting class of dynamically young
galaxy cluster. It may provide us insights into the early infall and merging
stage of the clusters. We propose CHANDRA observations of two bright X-ray
elongated clusters: A2384 and A2069. Their special mophologies provide us good
opportunities to detect fine structures (e.g., merging shocks or cold fronts) in
mergers with the capabilities of CHANDRA. The results will be very valuable for
understanding this specific kind of clusters, the nature of gas condensations
with or without associated galaxies, and the effects of the merger on the cooling
flow.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 21:52:21.00  -19:32:52.00  A2384                 ACIS-I NONE  32.00

===================================================================================

Proposal Number: 04800810            
Proposal Title: TEMPERATURE AND METAL ABUNDANCE DISTRIBUTIONS OF THE HOT GAS
WITHIN ABELL 3571

PI: JIMMY IRWIN                    
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Abell 3571 is the brightest of the hot cooling flow clusters that lie
in a direction of low Galactic column. Also, it is he 6th brightest galaxy
cluster overall, and the only cluster of the brightest 20 not yet observed with
Chandra. Previous analyses of A3571 showed that this cluster exhibits a rich
phenomenology, among them an apparent cooling flow and a central abundance
enhancement, apparently associated with SN Ia ejecta dominance, as well as an
apparent soft X-ray excess. We propose to observe A3571 with Chandra-S3 for 35
ksec in order to analyze the abundance, temperature, and small scale structure of
the central cooler region. This observation will be nicely complemented by an
XMM-Newton observation of this cluster already approved for observation.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 13:47:28.10  -32:51:06.80  A3571                 ACIS-S NONE  35.00

===================================================================================

Proposal Number: 04800884            
Proposal Title: THE NATURE OF LOW SURFACE BRIGHTNESS X-RAY CLUSTERS OF GALAXIES

PI: AARON LEWIS                    
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose ACIS-S observations of 5 newly discovered Low Surface
Brightness (LSB) X-ray clusters of galaxies. These rich clusters are apparently
so lacking in central concentration in X-rays that although above the flux limit,
they were missed by the EMSS survey. This omission of high-z X-ray clusters
seriously affects estimates of evolution in the cluster XLF and Omega(matter).
Chandra will reveal the nature of these new systems: What is their X-ray
morphology and why were they missed by the EMSS? Critically: would other new or
recent surveys also miss such clusters? ACIS imaging spectroscopy will resolve
any confused point sources, and determine if LSB clusters represent a new class
of objects: clusters in formation with high Lx, low Tx, and significant
substructure.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 07:16:39.60  +37:19:27.80  1310                  ACIS-S NONE  24.00
 08:51:40.10  +33:31:23.30  1492                  ACIS-S NONE  12.00
 23:50:48.20  +29:08:20.60  3810                  ACIS-S NONE  12.00

===================================================================================

Proposal Number: 04800913            
Proposal Title: DOES A SPIRAL-ONLY COMPACT GROUP HAVE DIFFUSE GAS?

PI: NAOMI OTA                      
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: The possible absence of diffuse X-rays in compact groups with only
spiral members, inferred from the ROSAT observations, would have great impacts on
our understanding of galaxy formation and evolution. With our proposed ACIS-S3
observation of HCG80, we aim at placing severe constraints on the presence or
absence of the diffuse intragroup gas. The positive detection will not only prove
the reality of the bound system but also allow us to probe its internal
structure. The negative detection will point to either that the real group is
always associated with an early-type galaxy, or that the X-ray emission is
preferentially suppressed in spiral-only groups. In either case, we will also be
able to study the X-ray morphologies of the member spirals.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 15:59:12.30  +65:13:33.00  HCG80                 ACIS-S NONE  20.00

===================================================================================

Proposal Number: 04800927            
Proposal Title: CHANDRA OBSERVATIONS OF DLS SHEAR-SELECTED CLUSTERS

PI: JOHN HUGHES                    
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose Chandra observations of the most massive clusters currently
identified from the Deep Lens Survey (DLS). The DLS is a deep multicolor (BVRz')
imaging survey of 28 square degree being carried out at the 4-m telescopes of the
US National Observatories (KPNO and CTIO). The DLS shear-selected cluster sample
makes it possible for the first time to study clusters in a baryon-independent
way. We are pursuing detailed investigations of this sample with HST and
ground-based Keck spectroscopy. Chandra observations will meet multiple
high-impact scientific goals, specifically, testing the ``fair sample''
hypothesis, calibrating the relationships between cluster mass, size, X-ray
luminosity and temperature, and studying the evolution of these relationships
with look-back time.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:22:17.00  -48:20:10.00  DLS J0522-4820        ACIS-I NONE  20.00
 09:16:00.00  +29:31:34.00  DLS J0916+2931        ACIS-I NONE  20.00
 10:49:41.00  -04:17:44.00  DLS J1049-0417        ACIS-I NONE  20.00
 10:54:08.00  -05:49:44.00  DLS J1054-0549        ACIS-I NONE  20.00
 10:55:12.00  -05:03:43.00  DLS J1055-0503        ACIS-I NONE  20.00
 14:02:01.70  -10:19:44.00  DLS J1402-1019        ACIS-I NONE  20.00
 14:02:12.00  -10:28:14.00  DLS J1402-1028        ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04800844            
Proposal Title: ABELL 520: A LABORATORY EXPERIMENT IN CLUSTER MERGERS

PI: DIAB JERIUS                    
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: Abell 520, a rich, z=0.201, X-ray luminous and hot cluster of galaxies
is probably the best object known in which to study the effects of mergers upon
the cluster environment. Existing X-ray data and radio data provide compelling
evidence that a small, compact, sub-cluster plunged through the cluster core.
This provides ideal circumstances for a detailed study of the merger's affect on
the cluster gas, the evolution of its galaxy population, and the formation of
radio halos. Existing radio and galaxy population data (velocities and
photometry) coupled with Chandra data will provide a detailed picture of the
physics of cluster mergers.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:54:03.80  +02:53:33.00  ABELL 520             ACIS-I NONE  71.00

===================================================================================

Proposal Number: 04800980            
Proposal Title: THE REMARKABLE ARC IN ABELL 1201 - PROBING THE MASS PROFILE OF
CLUSTERS DOWN TO 10KPC

PI: ALASTAIR EDGE                  
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to make a moderately deep Chandra observation of the cluster
Abell 1201 (z=0.17, L_x=6x10^44 erg/s) which contains a gravitational arc with a
uniquely small radius of curvature (2.4"). This arc provides an opportunity to
determine the mass profile of a cluster on a scale of 10kpc. It is on this scale
that current N-body simulations have the largest disagreements depending on the
nature of dark matter and numerical techniques. The proposed Chandra and HST
observations will provide two independent measures of the cluster mass profile
from 10-->500kpc to put the small scale mass constraint in context and
differentiate between mass model predictions on the smallest scales.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 11:12:54.40  +13:26:10.00  ABELL 1201            ACIS-S NONE  40.00

===================================================================================

Proposal Number: 04800013            
Proposal Title: X-RAY STUDIES OF DYNAMICALLY YOUNG CLUSTERS OF GALAXIES

PI: STEPHEN MURRAY                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: X-ray linearly flattened clusters may represent an early stage of
cluster evolution. With the superior angular-resolution of Chandra, we can search
for merger shocks/cold fronts during this stage. Substantial substructures are
expected to be found. Moreover, we can study the radio-ICM interaction for A514
and a cooling flow for A2384. The clusters selected help to construct a sample of
dynamically young clusters. This sample will eventually help the understanding of
cluster formation and early stage of evolution.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 04:48:20.56  -20:29:48.00  A514                  ACIS-I NONE  45.00

===================================================================================

Proposal Number: 04800990            
Proposal Title: X-RAY/SZ DETERMINATION OF COSMOLOGICAL PARAMETERS, PART II

PI: LEON VANSPEYBROECK             
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: These observations form part of a systematic determination of H0 and q0
by combining X-ray observations of distant galaxy clusters with radio
measurements of the Sunyaev Zel'dovich effect.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 08:42:57.80  +36:21:54.00  A697                  ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04800103            
Proposal Title: X-RAY/SZ DETERMINATION OF COSMOLOGICAL PARAMETERS

PI: LEON VANSPEYBROECK             
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: These observations form part of a systematic determination of H0 and q0
by combining X-ray observations of distant galaxy clusters with radio
measurements of the Sunyaev Zel'dovich effect.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:31:53.30  -13:36:46.80  A209                  ACIS-I NONE  10.00
 01:52:42.20  +01:00:46.80  A267                  ACIS-I NONE  20.00
 02:57:08.60  -23:26:06.00  MACS-J0257.1-2325     ACIS-I NONE  20.00
 03:29:40.80  -02:11:52.80  MACS-J0329.6-0211     ACIS-I NONE  20.00
 04:39:00.50  +07:16:06.00  RXJ0439.0+0715        ACIS-I NONE  20.00
 06:47:49.70  +70:14:52.80  MACS-J0647.7+7015     ACIS-I NONE  20.00
 07:44:52.90  +39:27:27.00  MACS-J0744.8+3927     ACIS-I NONE  20.00
 08:30:53.30  +65:50:02.40  A665                  ACIS-I NONE  30.00
 09:11:12.00  +17:46:30.00  MACS-J0911.2+1746     ACIS-I NONE  20.00
 09:17:53.10  +51:43:44.00  A773                  ACIS-I NONE  10.00
 11:49:35.00  +22:24:10.80  MACS-J1149.5+2223     ACIS-I NONE  20.00
 12:26:51.70  +21:52:25.00  MACS-J1226.8+2153     ACIS-I NONE  20.00
 13:35:16.30  +40:59:45.60  A1763                 ACIS-I NONE  20.00
 13:47:31.90  -11:45:43.20  RXJ1347.5-1145        ACIS-I NONE  60.00
 14:26:01.20  +37:49:40.80  A1914                 ACIS-I NONE  20.00
 16:21:24.00  +38:10:01.20  MACS-J1621.3+3810     ACIS-I NONE  20.00
 21:29:26.20  -07:41:27.60  MACS-J2129.4-0741     ACIS-I NONE  20.00

===================================================================================

Proposal Number: 04801019            
Proposal Title: MASS CONTENT & DYNAMICAL STATE OF 3 OPTICALLY SELECTED HIGH Z
(Z>0.8) CLUSTERS

PI: MONIQUE ARNAUD                 
Subject Category: CLUSTERS OF GALAXIES                              

Abstract: We propose to perform a joint XMM/CHANDRA/VIMOS follow-up of three EIS
distant clusters recently spectroscopically confirmed using FORS to be at
z=0.81,0.94 and 1.14. We propose to observe with IFU of VIMOS the core of these
clusters in order to measure their virial mass and study their dynamical state.
The XMM/CHANDRA observations will be used to measure the X-ray mass and the
morphology of the clusters. This will provide essential information on the
physics of gravitational collapse and the relative settling of the gas and
galaxies in the dark matter potential. Furthermore the gas entropy in the core
and the Lx-T relation will be compared with predictions of various theoretical
models, providing greater insight on the physics that givern the ICM evolution.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 09:54:47.50  -20:23:55.20  EIS0954-2023/22       ACIS-S NONE  15.00



***********************************************************************************
EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS        
--------------------------------------------------

===================================================================================

Proposal Number: 04900340            
Proposal Title: A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND
INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION

PI: CHRISTINE JONES                
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS        

Abstract: We propose a wide-field X-ray imaging survey with deep and shallow
components in order to map the structure and evolution of the Universe to
redshift unity, and to probe the nature, environment and evolutionary history of
AGN. The observations will cover the Bootes field of the NOAO Deep Wide-Field
Survey, that is unique in its wide-field coverage and availability of deep
multiwavelength imaging (including VLA and SIRTF) and optical spectroscopy. The
Chandra survey is designed to sample volumes appropriate for statistical
investigations of cluster environments, the space density of groups, biases in
the optical and X-ray selection of groups and clusters, and AGN phenomena in
relation to galaxy host properties and their evolution.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:25:15.44  +32:50:45.01  SS11                  ACIS-I NONE   5.00
 14:25:15.44  +33:15:11.61  SD41                  ACIS-I NONE   5.00
 14:25:15.44  +33:39:38.20  SD16                  ACIS-I NONE   5.00
 14:25:15.44  +34:04:04.80  SS24                  ACIS-I NONE   5.00
 14:26:06.54  +32:38:31.71  SS22                  ACIS-I NONE   5.00
 14:26:06.54  +33:02:58.31  SD52                  ACIS-I NONE   5.00
 14:26:06.54  +33:27:24.90  SS5                   ACIS-I NONE   5.00
 14:26:06.54  +33:51:51.50  SS13                  ACIS-I NONE   5.00
 14:26:58.62  +32:50:45.01  SS54                  ACIS-I NONE   5.00
 14:26:58.62  +33:15:11.61  SD30                  ACIS-I NONE   5.00
 14:26:58.62  +33:39:38.20  SD27                  ACIS-I NONE   5.00
 14:26:58.62  +34:04:04.80  SS35                  ACIS-I NONE   5.00
 14:27:49.72  +32:38:31.71  SS33                  ACIS-I NONE   5.00
 14:27:49.72  +33:02:58.31  SS9                   ACIS-I NONE   5.00
 14:27:49.72  +33:27:24.90  SS6                   ACIS-I NONE   5.00
 14:27:49.72  +33:51:51.50  SS2                   ACIS-I NONE   5.00
 14:28:41.80  +32:50:45.01  SS43                  ACIS-I NONE   5.00
 14:28:41.80  +33:15:11.61  SS19                  ACIS-I NONE   5.00
 14:28:41.80  +33:39:38.20  SD38                  ACIS-I NONE   5.00
 14:28:41.80  +34:04:04.80  SS46                  ACIS-I NONE   5.00
 14:29:32.90  +32:38:31.71  SS44                  ACIS-I NONE   5.00
 14:29:32.90  +33:02:58.31  SS20                  ACIS-I NONE   5.00
 14:29:32.90  +33:27:24.90  SD17                  ACIS-I NONE   5.00
 14:29:32.90  +33:51:51.50  SS47                  ACIS-I NONE   5.00
 14:30:24.98  +32:50:45.01  SS32                  ACIS-I NONE   5.00
 14:30:24.98  +33:15:11.61  SS8                   ACIS-I NONE   5.00
 14:30:24.98  +33:39:38.20  SD49                  ACIS-I NONE   5.00
 14:30:24.98  +34:04:04.80  SS1                   ACIS-I NONE   5.00
 14:31:16.08  +32:38:31.71  SS55                  ACIS-I NONE   5.00
 14:31:16.08  +33:02:58.31  SS31                  ACIS-I NONE   5.00
 14:31:16.08  +33:27:24.90  SD28                  ACIS-I NONE   5.00
 14:31:16.08  +33:51:51.50  SS36                  ACIS-I NONE   5.00
 14:32:08.16  +32:50:45.01  SS21                  ACIS-I NONE   5.00
 14:32:08.16  +33:15:11.61  SD51                  ACIS-I NONE   5.00
 14:32:08.16  +33:39:38.20  SS4                   ACIS-I NONE   5.00
 14:32:08.16  +34:04:04.80  SS12                  ACIS-I NONE   5.00
 14:32:59.26  +33:02:58.31  SS42                  ACIS-I NONE   5.00
 14:32:59.26  +33:27:24.90  SD39                  ACIS-I NONE   5.00
 14:32:59.26  +33:51:51.50  SS25                  ACIS-I NONE   5.00
 14:33:51.34  +32:50:45.01  SS10                  ACIS-I NONE   5.00
 14:33:51.34  +33:15:11.61  SD40                  ACIS-I NONE   5.00
 14:33:51.34  +33:39:38.20  SS15                  ACIS-I NONE   5.00
 14:33:51.34  +34:04:04.80  SS23                  ACIS-I NONE   5.00
 14:34:42.44  +33:02:58.31  SS53                  ACIS-I NONE   5.00
 14:34:42.44  +33:27:24.90  SD50                  ACIS-I NONE   5.00
 14:34:42.44  +33:51:51.50  SS14                  ACIS-I NONE   5.00
 14:35:34.52  +33:15:11.61  SD29                  ACIS-I NONE   5.00
 14:35:34.52  +33:39:38.20  SS26                  ACIS-I NONE   5.00
 14:35:34.52  +34:04:04.80  SS34                  ACIS-I NONE   5.00
 14:36:25.62  +33:27:24.90  SS7                   ACIS-I NONE   5.00
 14:36:25.62  +33:51:51.50  SS3                   ACIS-I NONE   5.00
 14:37:17.70  +33:39:38.20  SS37                  ACIS-I NONE   5.00
 14:37:17.70  +34:04:04.80  SS45                  ACIS-I NONE   5.00
 14:38:08.80  +33:27:24.90  SD18                  ACIS-I NONE   5.00
 14:38:08.80  +33:51:51.50  SS48                  ACIS-I NONE   5.00

===================================================================================

Proposal Number: 04900449            
Proposal Title: CHASING QUASAR 2

PI: FABRIZIO FIORE                 
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS        

Abstract: About 1/4 of faint Chandra and XMM hard X-ray selected sources has
X-ray to optical flux ratio ten times higher than that of optically selected type
1 AGN (which have X/O~1). The redshift and luminosity of this large source
population is unknown. If they are high-z, highly obscured AGN, i.e. quasar2,
they may carry the largest fraction of accretion power from that shell of
Universe. This proposal is to obtain accurate Chandra positions of 4 extreme
sources with X/O>30, F(2-10keV)>=2E-14 cgs and X-ray colors indicating strong
obscuration. This is the X-ray brightest sample of sources with X/O>30 known,
those for which we might expect to find, thanks to the Chandra arcsec positions,
optical-NIR counterparts bright enough to obtain photometric redshifts using 8m
class telescopes.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 05:39:05.00  -28:37:60.00  PKS0537-28_1          ACIS-I NONE  15.00
 05:40:05.00  -28:45:00.00  PKS0537-28_2          ACIS-I NONE  30.00

===================================================================================

Proposal Number: 04900940            
Proposal Title: A CHANDRA/XMM ATTACK ON THE ASTROPHYSICS OF THE HARD X-RAY
BACKGROUND.

PI: IAN MCHARDY                    
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS        

Abstract: We request Chandra observations to provide ~1" positions for sources in
a 200ks XMM survey and 0.6" positions for sources in a 700ks XMM survey. Over 400
X-ray sources will have high quality X-ray spectra and accurate identifications,
even for optically very faint sources where identification is hard, allowing for
evolutionary studies. The powerful combination of XMM spectra with CHANDRA
positions, and extensive observations in other bands, enables us to understand
the astrophysics of the hard X-ray background; ie do the contributors have
absorbed, or intrinsically flat, spectra? how do QSO spectra evolve? what is the
X-ray emission mechanism of optically inactive galaxies and of narrow emission
line galaxies? which non-gravitational source heated galaxy groups?

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 01:45:13.20  -04:29:40.40  XMM 1HR - FIELD 4     ACIS-I NONE  30.00
 01:45:38.90  -04:41:19.60  XMM 1HR - FIELD 3     ACIS-I NONE  30.00

===================================================================================

Proposal Number: 04901013            
Proposal Title: CHANDRA LARGE SCALE SURVEY OF THE NOAO BOOTES DEEP FIELD

PI: STEPHEN MURRAY                 
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS        

Abstract: We will survey part of the Northern NOAO Bootes Deep Field using 5 ksec
ACIS exposures with the primary goal of mapping the cosmic web to redshift unity.
At least 1000 AGN and 50 groups/clusters will be detected in the complete 9 sq.
degree survey. The X-ray survey depth is matched to a new CfA redshift survey of
the 18,000 galaxies brighter than R=20 and X-ray AGN brighter than R=22 in this
region. The redshift survey will include all X-ray clusters with z<0.5 and allow
detailed kinematic, environmental, and correlation function studies. The
contiguous AGN survey will be used to estimate the power spectrum at z~1. The
combination of X-ray images with optical, IR and radio observations provides
information not available from a single wavelength.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:32:59.26  +32:38:31.71  NOAO FIELD F49        ACIS-I NONE   5.00

===================================================================================

Proposal Number: 04901014            
Proposal Title: A CHANDRA WIDE-FIELD SURVEY TO MAP THE COSMIC WEB AND
INVESTIGATE THE EVOLUTION OF NUCLEAR ACCRETION

PI: CHRISTINE JONES                
Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS        

Abstract: We propose a wide-field X-ray imaging survey with deep and shallow
components in order to map the structure and evolution of the Universe to
redshift unity, and to probe the nature, environment and evolutionary history of
AGN. The observations will cover the Bootes field of the NOAO Deep Wide-Field
Survey, that is unique in its wide-field coverage and availability of deep multi-
wavelength imaging (including VLA and SIRTF) and optical spectroscopy. The
Chandra survey is designed to sample volumes appropriate for statistical
investigations of cluster environments, the space density of groups, biases in
the optical and X-ray selection of groups and clusters, and AGN phenomena in
relation to galaxy host properties and their evolution.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:25:15.44  +32:26:18.41  SS60                  ACIS-I NONE   5.00
 14:26:58.62  +32:26:18.41  SS59                  ACIS-I NONE   5.00
 14:28:41.80  +32:26:18.41  SS58                  ACIS-I NONE   5.00
 14:30:24.98  +32:26:18.41  SS57                  ACIS-I NONE   5.00
 14:32:08.16  +32:26:18.41  SS56                  ACIS-I NONE   5.00



***********************************************************************************
GALACTIC DIFFUSE EMISSION AND SURVEYS             
--------------------------------------------------

===================================================================================

Proposal Number: 04910023            
Proposal Title: CHANDRA LARGE SCALE SURVEY OF THE NOAO BOOTES DEEP FIELD

PI: STEPHEN MURRAY                 
Subject Category: GALACTIC DIFFUSE EMISSION AND SURVEYS             

Abstract: We will survey part of the Northern NOAO Bootes Deep Field using 5 ksec
ACIS exposures with the primary goal of mapping the cosmic web to redshift unity.
At least 1000 AGN and 50 groups/clusters will be detected in the complete 9 sq.
degree survey. The X-ray survey depth is matched to a new CfA redshift survey of
the 18,000 galaxies brighter than R=20 and X-ray AGN brighter than R=22 in this
region. The redshift survey will include all X-ray clusters with z<0.5 and allow
detailed kinematic, environmental, and correlation function studies. The
contiguous AGN survey will be used to estimate the power spectrum at z~1. The
combination of X-ray images with optical, IR and radio observations provides
information not available from a single wavelength.

                                                        Grat-   Exp. 
R.A.          Dec. (J2000)  Target Name           Det.   ing    Time 
-----------------------------------------------------------------------------------
 14:25:15.44  +34:28:31.40  NOAO FIELD F43        ACIS-I NONE   5.00
 14:25:15.44  +34:52:57.99  NOAO FIELD F62        ACIS-I NONE   5.00
 14:25:15.44  +35:17:24.59  NOAO FIELD F60        ACIS-I NONE   5.00
 14:25:15.44  +35:41:51.19  NOAO FIELD F35        ACIS-I NONE   5.00
 14:26:06.54  +34:16:18.10  NOAO FIELD F54        ACIS-I NONE   5.00
 14:26:06.54  +34:40:44.70  NOAO FIELD F8         ACIS-I NONE   5.00
 14:26:06.54  +35:05:11.29  NOAO FIELD F38        ACIS-I NONE   5.00
 14:26:06.54  +35:29:37.89  NOAO FIELD F24        ACIS-I NONE   5.00
 14:26:58.62  +34:28:31.40  NOAO FIELD F32        ACIS-I NONE   5.00
 14:26:58.62  +34:52:57.99  NOAO FIELD F51        ACIS-I NONE   5.00
 14:26:58.62  +35:17:24.59  NOAO FIELD F4         ACIS-I NONE   5.00
 14:26:58.62  +35:41:51.19  NOAO FIELD F46        ACIS-I NONE   5.00
 14:27:49.72  +34:16:18.10  NOAO FIELD F65        ACIS-I NONE   5.00
 14:27:49.72  +34:40:44.70  NOAO FIELD F19        ACIS-I NONE   5.00
 14:27:49.72  +35:05:11.29  NOAO FIELD F27        ACIS-I NONE   5.00
 14:27:49.72  +35:29:37.89  NOAO FIELD F13        ACIS-I NONE   5.00
 14:28:41.80  +34:28:31.40  NOAO FIELD F21        ACIS-I NONE   5.00
 14:28:41.80  +34:52:57.99  NOAO FIELD F40        ACIS-I NONE   5.00
 14:28:41.80  +35:17:24.59  NOAO FIELD F15        ACIS-I NONE   5.00
 14:28:41.80  +35:41:51.19  NOAO FIELD F57        ACIS-I NONE   5.00
 14:29:32.90  +34:16:18.10  NOAO FIELD F11        ACIS-I NONE   5.00
 14:29:32.90  +34:40:44.70  NOAO FIELD F30        ACIS-I NONE   5.00
 14:29:32.90  +35:05:11.29  NOAO FIELD F16        ACIS-I NONE   5.00
 14:29:32.90  +35:29:37.89  NOAO FIELD F2         ACIS-I NONE   5.00
 14:30:24.98  +34:28:31.40  NOAO FIELD F10        ACIS-I NONE   5.00
 14:30:24.98  +34:52:57.99  NOAO FIELD F29        ACIS-I NONE   5.00
 14:30:24.98  +35:17:24.59  NOAO FIELD F26        ACIS-I NONE   5.00
 14:30:24.98  +35:41:51.19  NOAO FIELD F1         ACIS-I NONE   5.00
 14:31:16.08  +34:16:18.10  NOAO FIELD F22        ACIS-I NONE   5.00
 14:31:16.08  +34:40:44.70  NOAO FIELD F41        ACIS-I NONE   5.00
 14:31:16.08  +35:05:11.29  NOAO FIELD F5         ACIS-I NONE   5.00
 14:31:16.08  +35:29:37.89  NOAO FIELD F58        ACIS-I NONE   5.00
 14:32:08.16  +34:28:31.40  NOAO FIELD F64        ACIS-I NONE   5.00
 14:32:08.16  +34:52:57.99  NOAO FIELD F18        ACIS-I NONE   5.00
 14:32:08.16  +35:17:24.59  NOAO FIELD F37        ACIS-I NONE   5.00
 14:32:08.16  +35:41:51.19  NOAO FIELD F12        ACIS-I NONE   5.00
 14:32:59.26  +34:16:18.10  NOAO FIELD F33        ACIS-I NONE   5.00
 14:32:59.26  +34:40:44.70  NOAO FIELD F52        ACIS-I NONE   5.00
 14:32:59.26  +35:05:11.29  NOAO FIELD F6         ACIS-I NONE   5.00
 14:32:59.26  +35:29:37.89  NOAO FIELD F47        ACIS-I NONE   5.00
 14:33:51.34  +34:28:31.40  NOAO FIELD F53        ACIS-I NONE   5.00
 14:33:51.34  +34:52:57.99  NOAO FIELD F7         ACIS-I NONE   5.00
 14:33:51.34  +35:17:24.59  NOAO FIELD F48        ACIS-I NONE   5.00
 14:33:51.34  +35:41:51.19  NOAO FIELD F23        ACIS-I NONE   5.00
 14:34:42.44  +34:16:18.10  NOAO FIELD F44        ACIS-I NONE   5.00
 14:34:42.44  +34:40:44.70  NOAO FIELD F63        ACIS-I NONE   5.00
 14:34:42.44  +35:05:11.29  NOAO FIELD F17        ACIS-I NONE   5.00
 14:34:42.44  +35:29:37.89  NOAO FIELD F36        ACIS-I NONE   5.00
 14:35:34.52  +34:28:31.40  NOAO FIELD F42        ACIS-I NONE   5.00
 14:35:34.52  +34:52:57.99  NOAO FIELD F61        ACIS-I NONE   5.00
 14:35:34.52  +35:17:24.59  NOAO FIELD F59        ACIS-I NONE   5.00
 14:35:34.52  +35:41:51.19  NOAO FIELD F34        ACIS-I NONE   5.00
 14:36:25.62  +34:16:18.10  NOAO FIELD F55        ACIS-I NONE   5.00
 14:36:25.62  +34:40:44.70  NOAO FIELD F9         ACIS-I NONE   5.00
 14:36:25.62  +35:05:11.29  NOAO FIELD F28        ACIS-I NONE   5.00
 14:36:25.62  +35:29:37.89  NOAO FIELD F25        ACIS-I NONE   5.00
 14:37:17.70  +34:28:31.40  NOAO FIELD F31        ACIS-I NONE   5.00
 14:37:17.70  +34:52:57.99  NOAO FIELD F50        ACIS-I NONE   5.00
 14:37:17.70  +35:17:24.59  NOAO FIELD F3         ACIS-I NONE   5.00
 14:37:17.70  +35:41:51.19  NOAO FIELD F45        ACIS-I NONE   5.00
 14:38:08.80  +34:16:18.10  NOAO FIELD F66        ACIS-I NONE   5.00
 14:38:08.80  +34:40:44.70  NOAO FIELD F20        ACIS-I NONE   5.00
 14:38:08.80  +35:05:11.29  NOAO FIELD F39        ACIS-I NONE   5.00
 14:38:08.80  +35:29:37.89  NOAO FIELD F14        ACIS-I NONE   5.00
 14:39:00.88  +35:41:51.19  NOAO FIELD F56        ACIS-I NONE   5.00






    

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