Chandra X-Ray Observatory
	(CXC)

Accepted Cycle 3 Large Projects

Proposal NumberSubject CategoryPI NameTypeTime
(Ks)
Title
03400837BH AND NS BINARIESGrindlayLP296COMPLETE COMPACT OBJECT AND BINARY SURVEY OF 47TUC
03500538SN, SNR AND ISOLATED NSKulkarniLP250A CHANDRA SURVEY FOR COMPACT OBJECTS IN SUPERNOVA REMNANTS
03600940NORMAL GALAXIESBaganoffLP518.5MONITORING THE EXTREME X-RAY FLARING OF SAGITTARIUS A* AND A DEEP SURVEY OF THE CENTRAL 40 PC OF THE GALAXY
03700413ACTIVE GALAXIES AND QUASARSFabbianoLP375AN IN-DEPTH STUDY OF THE X-RAY SOURCE POPULATION AND HOT ISM OF THE ANTENNAE GALAXIES
03700438ACTIVE GALAXIES AND QUASARSKaastraLP520RESOLVING THE WARM ABSORBER IN NGC 5548
03800272CLUSTERS OF GALAXIESEbelingLP527MACS: THE X-RAY PROPERTIES OF THE MOST MASSIVE GALAXY CLUSTERS AT Z>0.3
03900164EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYSBrandtLP1000.5THE CHANDRA SURVEY OF THE HUBBLE DEEP FIELD NORTH AREA: A PUBLIC RESOURCE FOR THE PRESENT AND FUTURE OF X-RAY ASTRONOMY

Subject Category: BH AND NS BINARIES

Proposal Number: 03400837

Title: COMPLETE COMPACT OBJECT AND BINARY SURVEY OF 47TUC

PI Name: Johnathan Grindlay

Our cycle 1 observation of 47Tuc has shown its promise as the ultimate laboratory for study of the production and evolution of compact binaries and compact objects in globular clusters. We propose a deep (4 x 75ksec) ACIS-S observation to measure the complete populations of millisecond pulsars (MSPs) and cataclysmic variables (CVs) by their variability and spectra and to constrain the main sequence binary population. Coordinated HST (ACS) data would provide unique identifications of CVs and many MSPs and allow the full population of quiescent low mass x-ray binaries to be distinguished from CVs. This dataset would provide fundamental constraints for the origins of neutron stars, millisecond pulsars, magnetic white dwarfs and compact binaries in globular clusters.

R.A. Dec. Target Name Det. Grating Exp.Time
00:24:05.80-72:04:51.2047 TUCANAEACIS-SNONE300

Subject Category: SN, SNR AND ISOLATED NS

Proposal Number: 03500538

Title: A CHANDRA SURVEY FOR COMPACT OBJECTS IN SUPERNOVA REMNANTS

PI Name: Shrinivas Kulkarni

It has become increasingly clear that the natal properties of young neutron stars exhibit a rich diversity --- dramatically illustrated by the enigmatic central object in Cas A and hinted at by early 3D modeling of core-collapse. We propose a survey of an objectively constructed sample of nearby SNRs which, when combined with archival data and our vigorous multi-wavelength observation program, will give us a reliable view of the true variety of neutron stars. The ensuing statistics and studies of the central objects will advance our understanding of core-collapse and have bearing on related topics (supernova energetics, natal kicks, etc). We believe that this comprehensive effort, a census of such objects within 5 kpc, will be one of the enduring legacies of the Chandra mission.

R.A. Dec. Target Name Det. Grating Exp.Time
01:28:32.00+63:06:34.00G127.1+0.5ACIS-INONE20
14:42:50.00-62:28:20.00G315.4-2.3ACIS-INONE10
19:38:24.00+17:17:32.00G053.6-2.2ACIS-INONE35
23:59:17.00+62:26:53.00G116.9+0.2ACIS-INONE50
19:33:20.00+18:58:44.00G054.4-0.3ACIS-INONE25
20:52:14.00+55:20:30.00G093.3+6.9ACIS-INONE15
13:50:30.00-62:06:13.00G309.8+0.0ACIS-INONE40
20:53:22.00+42:27:18.00G084.2-0.8ACIS-INONE25
05:26:49.00+42:57:19.00G166.0+4.2ACIS-INONE30

Subject Category: NORMAL GALAXIES

Proposal Number: 03600940

Title: MONITORING THE EXTREME X-RAY FLARING OF SAGITTARIUS A* AND A DEEP SURVEY OF THE CENTRAL 40 PC OF THE GALAXY

PI Name: Frederick Baganoff

In Cycle 1, we discovered the first clear evidence of X-ray emission from Sgr A*, the compact radio source associated with the massive black hole (MBH) at the dynamical center of the Milky Way. In Cycle 2, we made the first detection of rapid, large-amplitude X-ray variability of Sgr A*. To gather unprecedented information about the immediate environment of an MBH, we propose a 510-ks ACIS-I observation of Sgr A* to measure the quiescent-state emission spectrum and to characterize the timescales, duty cycle, energetics, and spectral evolution of the flares. Simultaneous monitoring with OVRO and VLBA are being proposed to search for correlated variations and lags predicted by theory to characterize the flaring state emission process. We will also obtain a deep survey in this rich field.

R.A. Dec. Target Name Det. Grating Exp.Time
17:45:40.00-29:00:28.00SGR A*ACIS-INONE510

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 03700413

Title: AN IN-DEPTH STUDY OF THE X-RAY SOURCE POPULATION AND HOT ISM OF THE ANTENNAE GALAXIES

PI Name: Giuseppina Fabbiano

We propose a deep 375~ks observation of the prototypical merger galaxies NGC~4038/39 (``The Antennae''), divided into 5 time segments. Together with the archival data, we will obtain a deep 450ks ACIS-S exposure and time monitoring over 3 yrs. The unique significance of the Antennae for our understanding of mergers and the extraordinary characteristics of the X-ray emission of this system, make this study essential for probing a wide range of fundamental questions on the properties and evolution of XRBs, the range of black hole masses implied by the rich ULX population, the properties of the multiphase ISM, and the evolution of galaxy mergers, that cannot be addressed by looking at more normal galaxies.

R.A. Dec. Target Name Det. Grating Exp.Time
12:01:53.70-18:52:35.50NGC 4038/NGC 4039ACIS-SNONE375

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 03700438

Title: RESOLVING THE WARM ABSORBER IN NGC 5548

PI Name: Jelle Kaastra

We propose to map the ionization and velocity structure of the X-ray and UV absorbers in NGC 5548 with the LETGS and HETGS of Chandra and STIS/HST. NGC 5548 is an important target for this kind of study because 1) it shows multiple kinematic components in the UV characterized by a range in ionization parameter and effective column, 2) it shows evidence for multiple kinematic and ionization components in previous Chandra X-ray spectra, and 3) it has a low Galactic column, which permits coverage of spectral lines out to 80 Angstrom with the LETGS. These data yield the ionization parameter and column density of the absorption-line regions as a function of radial velocity, and constrain the elemental abundances and shape of the unobserved EUV continuum.

R.A. Dec. Target Name Det. Grating Exp.Time
14:17:59.60+25:08:12.40NGC 5548HRC-SLETG350
14:17:59.60+25:08:12.40NGC 5548ACIS-SHETG170

Subject Category: CLUSTERS OF GALAXIES

Proposal Number: 03800272

Title: MACS: THE X-RAY PROPERTIES OF THE MOST MASSIVE GALAXY CLUSTERS AT Z>0.3

PI Name: Harald Ebeling

We propose ACIS-I and HST observations of 30 distant and very X-ray luminous clusters (z>0.3, Lx>1e45) detected in the MAssive Cluster Survey (MACS). 22 of these 30 are new discoveries. Our targets are the high-z counterparts of the best-studied local systems and, combined with 4 others scheduled for observation, form a statistical sample >10 times larger than any previous one in this redshift and luminosity range. Chandra's unique capabilities will allow us to obtain spatially resolved gas temperature and density maps to constrain both the cosmological and physical parameters governing the evolution of the most massive clusters at z<0.5. The proposed observations are complemented by extensive groundbased follow-up studies of weak gravitational lensing, galaxy dynamics and the SZ effect.

R.A. Dec. Target Name Det. Grating Exp.Time
04:17:33.70-11:54:12.00MACSJ0417.5-1154ACIS-INONE12
02:42:35.90-21:32:15.00MACSJ0242.5-2132ACIS-INONE12
19:31:50.10-26:34:36.50MACSJ1931.8-2634ACIS-INONE14
23:11:35.20+03:38:24.50MACSJ2311.5+0338ACIS-INONE14
00:47:20.90-08:10:30.50MACSJ0047.3-0810ACIS-INONE14
11:31:53.70-19:55:43.50MACSJ1131.8-1955ACIS-INONE15
09:49:53.80+17:08:03.00MACSJ0949.8+1708ACIS-INONE15
11:15:53.30+01:29:47.00MACSJ1115.8+0129ACIS-INONE16
22:45:05.20+26:37:58.00MACSJ2245.0+2637ACIS-INONE17
14:27:40.60-25:21:06.00MACSJ1427.6-2521ACIS-INONE17
22:11:44.60-03:49:47.00MACSJ2211.7-0349ACIS-INONE18
22:29:44.50-27:55:38.50MACSJ2229.7-2755ACIS-INONE17
01:52:35.50-28:52:47.00MACSJ0152.5-2852ACIS-INONE18
05:20:42.40-13:28:55.00MACSJ0520.7-1328ACIS-INONE20
01:59:49.90-08:49:49.00MACSJ0159.8-0849ACIS-INONE18
17:31:40.10+22:52:39.00MACSJ1731.6+2252ACIS-INONE21
13:19:59.60+70:03:34.50MACSJ1319.9+7003ACIS-INONE20
02:57:42.00-22:09:01.50MACSJ0257.6-2209ACIS-INONE20
04:04:38.50+11:09:21.00MACSJ0404.6+1109ACIS-INONE24
22:28:34.40+20:36:47.00MACSJ2228.5+2036ACIS-INONE21
17:20:15.50+35:36:22.00MACSJ1720.2+3536ACIS-INONE21
05:47:02.20-39:04:25.00MACSJ0547.0-3904ACIS-INONE22
03:08:55.40+26:45:39.00MACSJ0308.9+2645ACIS-INONE25
04:29:36.00-02:53:01.50MACSJ0429.6-0253ACIS-INONE24
00:35:26.80-20:15:37.50MACSJ0035.4-2015ACIS-INONE22
00:11:43.00-15:23:12.00MACSJ0011.7-1523ACIS-INONE22
20:49:55.90-32:17:10.50MACSJ2049.9-3217ACIS-INONE24
12:06:13.00-08:47:43.00MACSJ1206.2-0847ACIS-INONE24

Subject Category: EXTRAGALACTIC DIFFUSE EMISSION AND SURVEYS

Proposal Number: 03900164

Title: THE CHANDRA SURVEY OF THE HUBBLE DEEP FIELD NORTH AREA: A PUBLIC RESOURCE FOR THE PRESENT AND FUTURE OF X-RAY ASTRONOMY

PI Name: William Brandt

We propose to extend the Chandra deep survey of the HDF-N and its vicinity. The ultimate goal is to obtain 5 Ms of coverage over the next 5 years; currently we have 1 Ms coverage. Here we propose two public 500 ks observations. This project will fulfill one of Chandra's central design goals and will be a long-lasting legacy of Chandra, laying the groundwork for the next generation of X-ray observatories. We should remain nearly photon limited for point-sources near the aim point. We will study obscured and high-redshift AGN, starbursts, normal galaxies, clusters, groups, and diffuse X-ray emission. The HDF-N field is the ideal region for multiwavelength follow-up studies due to the enormous database already in place. Our ACIS team expertise will be extensively utilized.

R.A. Dec. Target Name Det. Grating Exp.Time
12:36:49.40+62:12:58.00HDF-NACIS-INONE1000
Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email:   cxchelp@head.cfa.harvard.edu Smithsonian Institution, Copyright © 1998-2017. All rights reserved.