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List of DDT Observations

Please note that obs_start_time is in UT, not local time.

Clicking on the Sequence Number link will take you to the title and abstract of the proposal.

Clicking on the ObsID link will take you to the results of our search in ADS for articles we were able to link to the ObsID. Our database extends to publications that appeared three months or more ago and does not include meeting abstracts.

A 'D' in the prop_time column means a proprietary time of 1-3 months, with the default being 3 months. A '3' means a proprietary time of three months. An 'N' means the data is public.

Click here for table only

Cycle	Sequence Number	ObsID	Instrument	Grating	Approved Exposure Time	Actual Exposure Time	Target	Status	Start Time [UT]	Proprietary Time	PI Name
09	400933	9882	ACIS-S	NONE	30.000000	0.000000	AXJ1754.2-2754	unobserved		D	Keek
09	400934	9883	ACIS-S	NONE	10.000000	10.058074	XMMUJ005510.7-37385	scheduled	Jul 8 2008 9:26PM	N	Kong
09	400932	9850	HRC-I	NONE	2.000000	2.186069	XTEJ1719-291	observed	Apr 27 2008 6:34PM	D	Sala
09	701771	9814	ACIS-S	NONE	10.000000	9.907200	SDSSJ0952+2143	archived	Feb 5 2008 4:43PM	N	Komossa
09	501018	9862	ACIS-S	NONE	30.000000	30.147200	SHB080503	archived	May 25 2008 6:28PM	N	Butler
09	501017	9853	ACIS-S	NONE	30.000000	30.175400	SHB080503	archived	May 7 2008 7:35PM	N	Butler
09	501014	9798	ACIS-S	NONE	18.500000	18.544200	SN2007on	archived	Dec 24 2007 11:15AM	D	Roelofs
09	501014	9799	ACIS-S	NONE	21.500000	21.569800	SN2007on	archived	Dec 27 2007 1:35AM	D	Roelofs
09	400931	9805	ACIS-S	NONE	5.000000	5.175000	m81-ot071213	archived	Dec 21 2007 6:54PM	D	Jonker
09	200526	9768	ACIS-I	NONE	30.000000	28.154200	NGC2264field1	archived	Mar 12 2008 6:10PM	N	Micela
09	200526	9769	ACIS-I	NONE	30.000000	30.150559	NGC2264field1	archived	Mar 28 2008 3:02PM	N	Micela
08	900737	8591	ACIS-I	NONE	46.000000	46.034877	ChandraDeepField-S	archived	Sep 20 2007 5:41AM	N	Tananbaum
08	900737	8592	ACIS-I	NONE	88.000000	87.785596	ChandraDeepField-S	archived	Oct 22 2007 12:36PM	N	Tananbaum
08	900737	8593	ACIS-I	NONE	51.000000	50.145559	ChandraDeepField-S	archived	Oct 6 2007 2:22AM	N	Tananbaum
08	900737	8594	ACIS-I	NONE	151.200000	143.272414	ChandraDeepField-S	archived	Nov 1 2007 12:10PM	N	Tananbaum
08	900737	8595	ACIS-I	NONE	118.000000	116.950436	ChandraDeepField-S	archived	Oct 19 2007 2:35PM	N	Tananbaum
08	900737	8596	ACIS-I	NONE	118.000000	116.640477	ChandraDeepField-S	archived	Oct 24 2007 1:46PM	N	Tananbaum
08	900737	8597	ACIS-I	NONE	61.000000	60.068618	ChandraDeepField-S	archived	Oct 17 2007 7:23AM	N	Tananbaum
08	900737	9575	ACIS-I	NONE	112.400000	110.133372	ChandraDeepField-S	archived	Oct 27 2007 6:09AM	N	Tananbaum
08	900737	9578	ACIS-I	NONE	40.000000	39.084800	ChandraDeepField-S	archived	Oct 30 2007 10:53PM	N	Tananbaum
08	900737	9593	ACIS-I	NONE	48.000000	47.045600	ChandraDeepField-S	archived	Sep 22 2007 8:49PM	N	Tananbaum
08	900737	9596	ACIS-I	NONE	115.400000	113.372872	ChandraDeepField-S	archived	Nov 4 2007 4:30AM	N	Tananbaum
08	900737	9718	ACIS-I	NONE	51.000000	50.030737	ChandraDeepField-S	archived	Oct 3 2007 2:12PM	N	Tananbaum
08	701583	8517	ACIS-S	NONE	5.000000	5.153200	M87	archived	Mar 22 2007 4:06AM	N	Harris
08	701582	8516	ACIS-S	NONE	5.000000	5.159200	M87	archived	Mar 19 2007 10:38AM	N	Harris
08	701581	8515	ACIS-S	NONE	5.000000	5.177600	M87	archived	Mar 14 2007 2:43PM	N	Harris
08	701580	8514	ACIS-S	NONE	5.000000	4.929200	M87	archived	Mar 12 2007 11:52AM	N	Harris
08	701579	8513	ACIS-S	NONE	5.000000	5.182800	M87	archived	Feb 24 2007 3:16AM	N	Harris
08	701578	8512	ACIS-S	NONE	5.000000	5.185600	M87	archived	Feb 21 2007 11:58PM	N	Harris
08	701577	8511	ACIS-S	NONE	5.000000	5.185600	M87	archived	Feb 18 2007 10:23PM	N	Harris
08	701576	8510	ACIS-S	NONE	5.000000	5.183600	M87	archived	Feb 15 2007 9:37AM	N	Harris
08	600649	8524	ACIS-S	NONE	30.000000	30.041600	GRB070125	archived	Mar 5 2007 9:49PM	N	Frail
08	501009	9579	ACIS-I	NONE	20.000000	19.709759	SN2007gr	archived	Aug 29 2007 1:52AM	N	Soderberg
08	500822	8518	ACIS-S	NONE	3.000000	3.043200	SN2005kd	archived	Mar 4 2007 2:54PM	N	Pooley
08	500821	8508	HRC-I	NONE	2.000000	2.159931	1RXSJ141256.0+79220	archived	Feb 18 2007 6:05PM	D	Rutledge
08	500820	8506	ACIS-S	NONE	20.000000	20.182000	CXOJ164710.2-455216	archived	Feb 2 2007 7:26PM	N	Woods
08	400928	9584	HRC-I	NONE	2.000000	2.184531	M15	archived	Sep 5 2007 3:23PM	N	Heinke
08	400691	8564	ACIS-I	NONE	11.200000	11.152000	SWIFTJ1756.9-2508	archived	Jul 6 2007 1:44AM	N	DiSalvo
08	400690	8562	ACIS-S	HETG	10.000000	10.152500	SwiftJ195509.6+2614	archived	Jun 14 2007 6:17PM	D	KANBACH
08	400689	8556	HRC-I	NONE	7.000000	7.180382	CirX-1	archived	May 16 2007 9:11PM	D	Jonker
08	400688	8547	HRC-I	NONE	43.000000	43.290108	CirX-1	archived	Apr 21 2007 5:32AM	D	Jonker
08	100071	9755	ACIS-S	NONE	10.000000	10.137600	17P/Holmes	archived	Oct 31 2007 10:31AM	N	Dennerl
08	100071	9762	ACIS-S	NONE	10.000000	10.188800	17P/Holmes	archived	Oct 31 2007 1:26PM	N	Dennerl
08	100071	9763	ACIS-S	NONE	10.000000	10.179200	17P/Holmes	archived	Oct 31 2007 4:21PM	N	Dennerl
07	600607	7373	ACIS-S	NONE	7.000000	7.184000	XMMUJ132218.3-16424	archived	Jul 31 2006 3:41AM	N	MINIUTTI
07	500817	8480	HRC-I	NONE	1.000000	1.149025	RBS1774(1RXSJ214303	archived	Nov 26 2006 10:15PM	D	Zane
07	500816	8473	ACIS-S	NONE	30.000000	30.124800	SN2006gy	archived	Nov 14 2006 8:57PM	N	Pooley
07	500815	8457	ACIS-S	NONE	10.000000	9.961600	SN2006jc	archived	Nov 4 2006 6:23AM	N	Immler
07	500814	8455	ACIS-S	NONE	15.000000	15.186750	CXOJ164710.2-455216	archived	Oct 28 2006 7:19AM	D	Kas
07	500693	7277	ACIS-S	NONE	15.000000	14.998400	SN2005ke	archived	Feb 19 2006 11:11AM	N	Immler
07	500692	7276	HRC-I	NONE	1.000000	1.112125	IGRJ15359-5750	archived	Mar 28 2006 4:54AM	N	Israel
07	500691	7275	HRC-I	NONE	1.000000	1.122631	IGRJ18048-1544	archived	Mar 28 2006 4:10AM	N	Israel
07	500690	7274	HRC-I	NONE	1.000000	1.097006	IGRJ17513-2011	archived	Mar 28 2006 3:40AM	N	Israel
07	500689	7273	HRC-I	NONE	1.000000	1.095981	IGRJ17488-3253	archived	Mar 28 2006 3:07AM	N	Israel
07	400680	8273	ACIS-I	NONE	21.600000	20.030359	LSI+61303	archived	Oct 25 2006 10:32PM	N	Perez-Torres
07	400561	7335	ACIS-S	NONE	10.000000	9.376000	PSRB1931+24	archived	Jul 20 2006 3:01PM	D	Rea
07	400559	7272	HRC-I	NONE	2.000000	2.135331	SWIFTJ1626.6-5156	archived	Feb 21 2006 6:28AM	N	Homan
07	400558	7269	ACIS-S	NONE	1.000000	1.161600	HD109962	archived	Feb 2 2006 2:14PM	N	Walter
07	300179	7298	HRC-S	LETG	20.000000	20.126132	RSOph	archived	Jun 4 2006 12:25PM	N	Starrfield
07	300178	7297	HRC-S	LETG	10.000000	9.505082	RSOph	archived	Apr 20 2006 5:43PM	N	Starrfield
07	300177	7296	HRC-S	LETG	10.000000	10.152882	RSOph	archived	Mar 24 2006 12:40PM	N	Starrfield
07	300172	7280	ACIS-S	HETG	10.000000	10.075000	RSOph	archived	Feb 26 2006 3:36PM	N	Starrfield
07	200460	8474	ACIS-I	NONE	10.000000	9.753600	L1415EXor	archived	Nov 18 2006 2:41AM	N	KASTNER
07	100067	7334	ACIS-S	NONE	4.000000	4.182400	73P/Schwassmann-Wach	archived	May 23 2006 10:34AM	N	Wolk
07	100066	7333	ACIS-S	NONE	4.000000	4.182400	73P/Schwassmann-Wach	archived	May 23 2006 9:19AM	N	Wolk
07	100065	7332	ACIS-S	NONE	4.000000	4.185600	73P/Schwassmann-Wach	archived	May 23 2006 8:03AM	N	Wolk
07	100064	7331	ACIS-S	NONE	4.000000	4.185600	73P-B/Schwassmann-Wa	archived	May 23 2006 6:48AM	N	Wolk
07	100063	7330	ACIS-S	NONE	4.000000	4.105600	73P-B/Schwassmann-Wa	archived	May 23 2006 5:33AM	N	Wolk
06	701180	6278	ACIS-I	NONE	3.500000	3.638000	IGRJ19473+4452	archived	Jul 31 2005 9:32AM	N	Sunyaev
06	701179	6277	ACIS-I	NONE	3.500000	3.759572	IGRJ13091+1137	archived	Jul 25 2005 10:25AM	N	Sunyaev
06	701178	6276	ACIS-I	NONE	3.500000	3.260449	IGRJ12391-1612	archived	Jul 25 2005 11:45AM	N	Sunyaev
06	701177	6275	ACIS-I	NONE	3.500000	3.260799	IGRJ12026-5349	archived	Jun 16 2005 6:10AM	N	Sunyaev
06	701176	6274	ACIS-I	NONE	3.500000	3.676799	IGRJ11085-5100	archived	Jul 1 2005 3:58AM	N	Sunyaev
06	701175	6273	ACIS-I	NONE	3.500000	3.707715	IGRJ10252-6829	archived	Jul 30 2005 9:24AM	N	Sunyaev
06	701174	6272	ACIS-I	NONE	3.500000	3.257599	IGRJ07563-4137	archived	Jun 16 2005 4:46AM	N	Sunyaev
06	701173	6271	ACIS-I	NONE	3.500000	3.459199	IGRJ05007-7047	archived	Jun 16 2005 3:25AM	N	Sunyaev
06	701172	6227	ACIS-S	NONE	10.000000	10.323190	NGC3690	archived	Feb 14 2005 4:53AM	N	Nandra
06	500685	7241	ACIS-S	NONE	50.000000	50.179190	SN2005gj	archived	Dec 11 2005 5:26PM	N	Pooley
06	500603	6284	ACIS-S	NONE	30.000000	29.788040	SN2005bx	archived	Jul 30 2005 11:11AM	N	Filippenko
06	500601	6269	ACIS-S	NONE	20.000000	20.184090	GRB050412	archived	Apr 17 2005 9:43AM	N	Berger
06	500599	6251	HRC-S	NONE	30.000000	27.149430	SGR1806-20	archived	Apr 22 2005 7:03PM	D	Kouveliotou
06	500598	6224	ACIS-I	NONE	20.000000	19.059190	SGR1806-20	archived	Feb 9 2005 7:25AM	1	Fox
06	500597	6207	ACIS-S	NONE	30.000000	29.100500	SGR1806-20	archived	Feb 8 2005 10:54PM	1	Rea
06	400472	6354	ACIS-S	NONE	20.000000	19.043960	GRB050709	archived	Jul 25 2005 9:03PM	N	Frail
06	400470	6298	HRC-I	NONE	5.000000	4.767531	SAXJ1808.4-3658	archived	Jun 20 2005 11:25PM	N	Chakrabarty
06	400469	6297	ACIS-S	HETG	15.000000	14.344000	SAXJ1808.4-3658	archived	Jun 12 2005 2:32AM	N	Galloway
06	400468	6261	ACIS-S	NONE	10.000000	10.180800	J1638-4725	archived	May 4 2005 7:47PM	N	McLaughlin
06	400467	6259	ACIS-S	NONE	5.000000	5.169599	HESSJ1826-148	archived	Apr 13 2005 3:01AM	N	Funk
06	400447	6181	ACIS-S	NONE	15.000000	14.182800	IGRJ00291+5934	archived	Feb 6 2005 1:45PM	N	Jonker
06	400446	6180	ACIS-S	NONE	10.000000	9.894359	IGRJ00291+5934	archived	Jan 14 2005 12:11AM	N	Jonker
06	400445	6179	ACIS-S	NONE	5.000000	5.185200	IGRJ00291+5934	archived	Jan 1 2005 9:24PM	N	Jonker
06	300171	7186	ACIS-S	HETG	50.000000	50.155000	RTCru	archived	Oct 19 2005 10:41AM	N	Sokoloski
06	200372	6375	HRC-I	NONE	5.000000	5.150881	AlphaCentauri	archived	Dec 17 2006 4:58AM	N	Ayres
06	200371	6374	HRC-I	NONE	5.000000	5.157031	AlphaCentauri	archived	May 12 2006 6:31PM	N	Ayres
06	200370	6373	HRC-I	NONE	5.000000	5.187781	AlphaCentauri	archived	Oct 21 2005 2:59AM	N	Ayres
06	200363	6204	ACIS-S	NONE	5.000000	5.136400	V1118Ori	archived	Jan 26 2005 3:24AM	D	Audard
05	800560	6112	ACIS-I	NONE	10.000000	9.510799	MACS1427.2+4407	archived	Feb 12 2005 2:19AM	N	Allen
05	800559	6111	ACIS-I	NONE	50.000000	50.157877	MACS0744.9+3927	archived	Dec 3 2004 9:25PM	N	Allen
05	800558	6110	ACIS-I	NONE	70.000000	64.042810	MACS1311.0-0311	archived	Apr 20 2005 12:23AM	N	Allen
05	800557	6109	ACIS-I	NONE	40.000000	38.046250	MACS1621.6+3810	archived	Dec 11 2004 2:31PM	N	Allen
05	800557	6172	ACIS-I	NONE	30.000000	30.144270	MACS1621.6+3810	archived	Dec 25 2004 10:04PM	N	Allen
05	800556	6108	ACIS-I	NONE	40.000000	40.169750	MACS0329.7-0212	archived	Dec 6 2004 6:18AM	N	Allen
05	800555	6107	ACIS-I	NONE	38.000000	34.332410	MACS1720.3+3536	archived	Nov 22 2005 9:35PM	N	Allen
05	800555	7225	ACIS-I	NONE	2.000000	2.045959	MACS1720.3+3536	archived	Nov 27 2005 3:12AM	N	Allen
05	800554	6106	ACIS-I	NONE	40.000000	35.770890	MACS0159.8-0849	archived	Dec 4 2004 12:14PM	N	Allen
05	800553	6105	ACIS-I	NONE	40.000000	37.770350	MACS0011.7-1523	archived	Jun 28 2005 11:51AM	N	Allen
05	800552	6104	ACIS-I	NONE	10.000000	9.737000	Abell2204	archived	Sep 20 2004 11:42AM	N	Allen
05	800551	6103	ACIS-I	NONE	10.000000	10.406000	PKS0745-191	archived	Sep 24 2004 12:35AM	N	Allen
05	800550	6102	ACIS-I	NONE	10.000000	10.127000	Abell478	archived	Sep 13 2004 5:15PM	N	Allen
05	800549	6101	ACIS-I	NONE	10.000000	10.050190	Abell2029	archived	Dec 17 2004 3:50AM	N	Allen
05	701014	5302	ACIS-S	NONE	30.000000	31.121000	NGC4395	archived	Apr 11 2004 1:28AM	N	Moran
05	701013	5301	ACIS-S	NONE	30.000000	29.730000	NGC4395	archived	Apr 10 2004 3:06AM	N	Moran
05	600412	5360	ACIS-I	NONE	5.000000	5.174000	CXOGCJ174540.0-2900	archived	Aug 28 2004 12:21PM	N	Baganoff
05	500600	6260	ACIS-S	NONE	10.000000	10.140790	GCRTJ1745-3009	archived	May 1 2005 12:47AM	D	Hyman
05	500591	6129	ACIS-I	NONE	20.000000	19.508000	GRB040912	archived	Sep 21 2004 11:18AM	N	Ricker
05	500590	6128	ACIS-I	NONE	20.000000	18.168000	GRB040912	archived	Sep 15 2004 10:24PM	N	Ricker
05	500585	6098	ACIS-I	NONE	5.000000	4.707000	VHEJ1303-63	archived	Sep 25 2004 6:02PM	D	Halpern
05	500508	5365	ACIS-S	NONE	10.000000	10.163000	GRB040812	archived	Aug 22 2004 10:12AM	N	Kouveliotou
05	500507	5364	ACIS-S	NONE	10.000000	10.175000	GRB040812	archived	Aug 17 2004 7:28AM	N	Kouveliotou
05	500506	5314	ACIS-S	NONE	30.000000	30.156000	GRB031203	archived	Apr 18 2004 11:59AM	D	Kouveliotou
05	500505	5306	ACIS-S	NONE	15.000000	14.758000	SN2001em	archived	Apr 4 2004 7:41PM	N	Pooley
05	500504	5305	HRC-S	LETG	35.000000	35.705000	RXJ0720-3125	archived	Feb 27 2004 4:53AM	N	Vink
05	500503	5298	ACIS-S	NONE	25.000000	21.848000	GRB031203	archived	Jan 22 2004 9:34PM	N	Kulkarni
05	400376	5291	ACIS-S	NONE	10.000000	10.137000	PSRJ0737-3039	archived	Jan 18 2004 7:56PM	1	McLaughlin
05	300145	5293	HRC-S	LETG	40.000000	41.953000	MiraAB	archived	Jan 11 2004 2:09PM	D	Karovska
05	300144	5292	HRC-S	LETG	10.000000	10.308000	V4743Sgr	archived	Feb 28 2004 1:31AM	N	Starrfield
05	200298	5308	ACIS-S	NONE	5.000000	4.963000	IRAS05436-0007	archived	Mar 22 2004 12:35AM	N	KASTNER
05	200297	5307	ACIS-S	NONE	5.000000	5.561000	IRAS05436-0007	archived	Mar 7 2004 1:41AM	N	KASTNER
05	100053	5321	ACIS-S	NONE	3.400000	3.558000	C/2001Q4(NEAT)	archived	May 12 2004 6:50PM	D	Lisse
05	100053	5325	ACIS-S	NONE	3.300000	3.484000	C/2001Q4(NEAT)	archived	May 12 2004 7:55PM	D	Lisse
05	100053	5326	ACIS-S	NONE	3.300000	3.471000	C/2001Q4(NEAT)	archived	May 12 2004 8:58PM	D	Lisse
04	800375	4438	ACIS-S	NONE	30.000000	29.136000	RCS0439.6-2905	archived	Jun 6 2003 6:17AM	D	Bautz
04	500500	5247	HRC-I	NONE	5.000000	4.871000	IGRJ16316-4028	archived	Jan 18 2004 1:07PM	D	Foschini
04	500499	5246	ACIS-S	NONE	25.000000	25.509000	SN2003jd	archived	Nov 10 2003 7:08PM	N	Watson
04	500498	5240	HRC-I	NONE	3.000000	2.884000	XTEJ1810-197	archived	Nov 1 2003 3:26PM	N	Israel
04	500415	4454	HRC-I	NONE	3.000000	2.833000	XTEJ1810-197	archived	Aug 27 2003 10:43PM	N	Gotthelf
04	500413	4449	ACIS-S	NONE	20.000000	18.435000	SN2002ic	archived	Aug 11 2003 9:40PM	D	Hughes
04	500412	4443	ACIS-S	NONE	25.000000	25.125000	SGR1806-20	archived	Aug 3 2003 12:13PM	D	Woods
04	500411	4432	ACIS-S	LETG	100.000000	98.100000	H2650	archived	Mar 29 2003 3:05AM	N	Ricker
04	500410	4425	ACIS-S	NONE	40.000000	40.172000	GRB030226	archived	Feb 27 2003 5:14PM	N	Pedersen
04	500409	4417	ACIS-S	NONE	30.000000	30.415000	SN2003L	archived	Feb 10 2003 3:59AM	N	Kulkarni
04	400324	4439	ACIS-S	HETG	10.000000	9.987000	XTEJ1814-338	archived	Jun 20 2003 2:12AM	D	Chakrabarty
04	400323	4434	ACIS-S	NONE	47.000000	47.051000	IGRJ16358-4726	archived	Apr 21 2003 3:49AM	D	Kouveliotou
04	400322	4426	HRC-S	NONE	3.000000	2.824000	XTEJ1807-294	archived	Mar 10 2003 8:34AM	D	MARKWARDT
04	400321	4424	ACIS-S	NONE	10.000000	10.687000	XTEJ1908+094	archived	May 14 2003 1:51AM	D	Jonker
04	400320	4423	ACIS-S	NONE	5.000000	5.150000	XTEJ1908+094	archived	Apr 19 2003 3:14PM	D	Jonker
04	400319	4422	ACIS-S	NONE	5.000000	5.212000	XTEJ1908+094	archived	Mar 24 2003 12:07AM	D	Jonker
04	400318	4420	ACIS-S	HETG	75.000000	76.220000	GX339-4	archived	Mar 17 2003 8:05PM	D	Miller
04	100052	5311	HRC-I	NONE	5.640000	5.521000	Moon	archived	May 4 2004 4:36AM	N	Drake
04	100052	5312	HRC-I	NONE	5.600000	5.679000	Moon	archived	Jun 2 2004 8:41AM	N	Drake
04	100052	5324	HRC-I	NONE	5.640000	5.772000	Moon	archived	May 4 2004 7:00AM	N	Drake
04	100052	5327	HRC-I	NONE	5.600000	5.638000	Moon	archived	Jun 2 2004 10:58AM	N	Drake
04	100052	5351	HRC-I	NONE	5.600000	5.471000	Moon	archived	Jul 27 2004 11:13PM	N	Drake
04	100052	5352	HRC-I	NONE	4.700000	4.657600	Moon	archived	Jul 28 2004 1:30AM	N	Drake
03	400247	3476	ACIS-S	NONE	5.000000	0.000000	RXJ170930.2-263927	discarded	Apr 21 2002 5:16AM	D	Jonker
03	700612	3419	ACIS-S	NONE	100.000000	97.944000	MGJ0414+0534	archived	Jan 9 2002 12:00AM	D	Chartas
03	600330	4360	ACIS-I	NONE	5.000000	4.969000	M31	archived	Aug 11 2002 6:15PM	N	Primini
03	500408	4409	ACIS-S	NONE	30.000000	30.431000	GRB021004	archived	Nov 25 2002 5:51PM	N	Sako
03	500407	4405	ACIS-S	NONE	10.000000	10.115000	SN2002HI	archived	Dec 10 2002 5:45PM	N	Lewin
03	500406	4404	ACIS-S	NONE	30.000000	30.335000	SN2002HH	archived	Nov 25 2002 8:58AM	N	Lewin
03	500405	4381	ACIS-S	HETG	80.000000	88.130000	GRB021004	archived	Oct 5 2002 8:58AM	N	HARRISON
03	500404	4364	ACIS-S	HETG	80.000000	78.122000	GRB020813	archived	Aug 13 2002 11:46PM	N	Ricker
03	500298	3496	ACIS-S	NONE	25.000000	24.188000	SN2001IG	archived	Jun 11 2002 6:20AM	N	Schlegel
03	500297	3495	ACIS-S	NONE	25.000000	23.734000	SN2001IG	archived	May 21 2002 11:53PM	N	Schlegel
03	500296	3494	ACIS-S	NONE	15.000000	14.755000	XRF020427	archived	May 14 2002 3:55AM	N	Fox
03	500295	3493	ACIS-S	NONE	15.000000	13.916000	XRF020427	archived	May 6 2002 5:46AM	N	Fox
03	500294	3477	ACIS-S	NONE	20.000000	20.057000	GRB020321	archived	Mar 31 2002 2:13AM	N	Fox
03	500292	3449	ACIS-S	NONE	3.000000	2.662000	SGR1900+14	archived	Mar 11 2002 11:03AM	D	Woods
03	500291	3441	ACIS-I	NONE	15.000000	14.672000	XRF011130	archived	Feb 20 2002 10:18AM	N	Ricker
03	500287	3437	ACIS-I	NONE	10.000000	10.064000	GRB020127	archived	Feb 11 2002 11:17AM	N	Fox
03	500286	3436	ACIS-I	NONE	10.000000	9.968000	GRB020127	archived	Jan 31 2002 10:37PM	N	Fox
03	400316	4358	ACIS-I	NONE	5.000000	4.979000	TEVJ2032+4130	archived	Aug 11 2002 8:07PM	D	Butt
03	400315	4285	ACIS-S	NONE	5.000000	4.687000	V4641SGR	archived	Aug 5 2002 4:16AM	D	RUPEN
03	400270	3724	ACIS-S	HETG	30.000000	26.400000	CYGX-1	archived	Jul 30 2002 5:42PM	N	Feng
03	400268	3672	ACIS-S	NONE	20.000000	18.255000	XTEJ1550-564	archived	Jun 19 2002 9:17AM	D	Corbel
03	400267	3671	ACIS-S	NONE	5.000000	5.538000	1E1740.7-2942	archived	Aug 17 2002 1:24PM	D	Heindl
03	400266	3670	ACIS-S	HETG	10.000000	10.140000	1E1740.7-2942	archived	Jun 13 2002 7:29PM	D	Heindl
03	400265	3661	ACIS-S	LETG	20.000000	17.961000	XTEJ0929-314	archived	May 15 2002 12:43AM	D	Chakrabarty
03	400256	3490	ACIS-S	NONE	7.000000	7.648000	AQLX-1	archived	Sep 3 2002 4:27PM	D	Rutledge
03	400255	3489	ACIS-S	NONE	7.000000	7.858000	AQLX-1	archived	Aug 18 2002 8:19AM	D	Rutledge
03	400254	3488	ACIS-S	NONE	7.000000	7.172000	AQLX-1	archived	Jul 22 2002 9:01PM	D	Rutledge
03	400253	3487	ACIS-S	NONE	7.000000	6.549000	AQLX-1	archived	Jul 5 2002 3:45PM	D	Rutledge
03	400252	3486	ACIS-S	NONE	7.000000	7.151000	AQLX-1	archived	Jun 11 2002 3:50AM	D	Rutledge
03	400251	3485	ACIS-S	NONE	7.000000	7.672000	AQLX-1	archived	May 20 2002 7:41AM	D	Rutledge
03	400250	3484	ACIS-S	NONE	7.000000	7.160000	AQLX-1	archived	May 4 2002 11:04PM	D	Rutledge
03	400249	3483	HRC-S	NONE	3.000000	2.976000	XTEJ1751-305	archived	Apr 10 2002 4:31PM	D	MARKWARDT
03	400248	3481	ACIS-S	NONE	1.000000	1.133000	XTEJ1908+094	archived	Apr 15 2002 5:39AM	N	RUPEN
03	400247	3492	ACIS-S	NONE	5.000000	5.231000	RXJ170930.2-263927	archived	Apr 23 2002 9:58PM	D	Jonker
03	400246	3475	ACIS-S	NONE	5.000000	5.965000	RXJ170930.2-263927	archived	Apr 10 2002 5:49PM	D	Jonker
03	400239	3464	ACIS-S	NONE	5.000000	5.147000	RXJ170930.2-263927	archived	Apr 1 2002 12:43AM	D	Jonker
03	400238	3463	ACIS-S	NONE	8.477000	8.477000	RXJ170930.2-263927	archived	Mar 18 2002 11:46AM	D	Jonker
03	400237	3462	ACIS-S	NONE	15.000000	14.210000	RXJ170930.2-263927	archived	Mar 12 2002 1:52PM	D	Jonker
03	400236	3448	ACIS-S	NONE	30.000000	27.457000	XTEJ1550-564	archived	Mar 11 2002 3:16PM	D	Corbel
03	300090	3455	ACIS-S	HETG	35.000000	34.457000	GKPER	archived	Apr 9 2002 3:06PM	D	Mauche
03	300089	3454	ACIS-S	HETG	35.000000	32.102000	GKPER	archived	Mar 27 2002 9:49AM	D	Mauche
03	300087	3434	ACIS-S	NONE	5.000000	5.629000	IMNORMAE	archived	Feb 4 2002 6:01PM	N	Starrfield
03	100038	4410	HRC-I	NONE	1.000000	1.116000	EARTH	archived	Feb 7 2003 1:23AM	D	Gladstone
03	100034	3447	ACIS-S	NONE	12.000000	11.718000	C/2002C1	archived	Apr 15 2002 1:52AM	D	Dennerl
03	100034	3453	ACIS-S	NONE	12.000000	11.964000	C/2002C1	archived	Apr 15 2002 11:15PM	D	Dennerl
03	100032	3412	ACIS-S	NONE	20.000000	20.122000	FXRT011030	archived	Nov 29 2001 11:09AM	D	HARRISON
03	100031	3411	ACIS-S	NONE	50.000000	47.209000	FXRT011030	archived	Nov 9 2001 5:44PM	N	HARRISON
02	900066	2239	ACIS-I	NONE	132.000000	132.469000	CDFS	archived	Dec 23 2000 5:49PM	N	GIACCONI
02	900066	2312	ACIS-I	NONE	136.000000	125.323000	CDFS	archived	Dec 13 2000 3:47AM	N	GIACCONI
02	900066	2313	ACIS-I	NONE	132.000000	132.115000	CDFS	archived	Dec 21 2000 2:28AM	N	GIACCONI
02	900066	2406	ACIS-I	NONE	31.000000	30.079000	CDFS	archived	Dec 10 2000 11:51PM	N	GIACCONI
02	900066	2409	ACIS-I	NONE	69.000000	69.895000	CDFS	archived	Dec 19 2000 4:12AM	N	GIACCONI
02	800178	2427	ACIS-S	NONE	20.000000	18.094000	PKS0745-191	archived	Jun 16 2001 5:50AM	D	Fabian
02	700608	3395	ACIS-S	NONE	30.000000	28.777000	MGJ0414+0534	archived	Nov 9 2001 8:34AM	D	Chartas
02	700607	3359	ACIS-S	NONE	6.000000	5.760000	SDSSPJ083643+005453	archived	Jan 29 2002 12:02PM	N	Brandt
02	700606	3358	ACIS-S	NONE	8.000000	8.262000	SDSSPJ130608+035626	archived	Jan 29 2002 6:28AM	N	Brandt
02	700605	3357	ACIS-S	NONE	8.000000	8.057000	SDSSPJ103027+052455	archived	Jan 29 2002 9:11AM	N	Brandt
02	700393	2454	ACIS-S	NONE	5.000000	4.500000	CIRCINUSGALAXY	archived	May 2 2001 4:20PM	N	Matt
02	500285	3380	HRC-S	LETG	170.000000	167.446000	RXJ1856.5-3754	archived	Oct 10 2001 5:18AM	N	Tananbaum
02	500285	3381	HRC-S	LETG	170.000000	171.073000	RXJ1856.5-3754	archived	Oct 12 2001 7:31PM	N	Tananbaum
02	500285	3382	HRC-S	LETG	100.500000	101.926000	RXJ1856.5-3754	archived	Oct 8 2001 8:31AM	N	Tananbaum
02	500285	3399	HRC-S	LETG	9.500000	9.318000	RXJ1856.5-3754	archived	Oct 15 2001 11:59AM	N	Tananbaum
02	500200	2459	ACIS-S	NONE	20.000000	18.896000	SGR1900+14	archived	Apr 30 2001 11:27PM	N	Kouveliotou
02	500199	2458	ACIS-S	NONE	20.000000	20.835000	SGR1900+14	archived	Apr 22 2001 4:58AM	N	Kulkarni
02	500197	2424	ACIS-S	NONE	30.000000	29.923000	GRB010222	archived	Feb 22 2001 10:28PM	D	Piro
02	400234	3407	ACIS-S	HETG	30.000000	30.000000	CYGX-1	archived	Oct 28 2001 4:33PM	D	Cui
02	400233	3360	ACIS-S	NONE	2.500000	2.641000	NGC6440	archived	Aug 18 2001 8:23PM	N	in'tZand
02	400164	2430	HRC-I	NONE	10.000000	9.889000	GRS1758-258	archived	Mar 24 2001 7:43AM	D	Heindl
02	400163	2429	ACIS-S	HETG	30.000000	30.280000	GRS1758-258	archived	Mar 24 2001 10:58AM	D	Heindl
02	400162	2428	ACIS-S	NONE	20.000000	20.400000	KS1731-260	archived	Mar 27 2001 12:34AM	D	Wijnands
02	400161	2415	ACIS-S	HETG	30.000000	30.146000	CYGNUSX-1	archived	Jan 4 2001 6:20AM	D	Miller
02	300067	2514	ACIS-S	NONE	10.000000	10.179000	WZSGE	archived	Sep 19 2001 1:56AM	N	Kuulkers
02	300066	2513	ACIS-S	NONE	10.000000	12.075000	WZSGE	archived	Aug 22 2001 8:41AM	N	Kuulkers
02	300065	2512	ACIS-S	NONE	5.000000	4.910000	WZSGE	archived	Aug 7 2001 5:47PM	N	Kuulkers
02	300061	2508	ACIS-S	NONE	5.000000	5.159000	WZSGE	archived	Jul 29 2001 4:49PM	N	Wheatley
02	300059	2506	HRC-S	LETG	20.000000	19.984000	WZSGE	archived	Aug 18 2001 8:07AM	N	Wheatley
02	300058	2505	HRC-S	LETG	20.000000	18.760000	WZSGE	archived	Aug 6 2001 7:53PM	N	Wheatley
02	300057	2504	HRC-S	LETG	20.000000	19.950000	WZSGE	archived	Jul 27 2001 2:44AM	N	Wheatley
02	300056	2492	ACIS-S	NONE	20.000000	19.885000	CIAQL	archived	Aug 1 2001 12:52PM	D	Greiner
02	300054	2465	ACIS-S	NONE	2.000000	2.149000	CIAQL	archived	Jun 1 2001 8:41PM	D	Greiner
02	200125	2338	ACIS-S	HETG	25.000000	24.838000	WR140	archived	May 8 2001 8:01PM	D	Pollock
02	200124	2337	ACIS-S	HETG	50.000000	46.124000	WR140	archived	Dec 29 2000 10:32AM	D	Pollock
01	100011	961	HRC-S	LETG	19.100000	0.000000	Discarded	discarded	Nov 26 1999 9:02AM	3	WAITE
01	700266	1715	HRC-S	LETG	20.000000	19.839000	MRK421	archived	May 29 2000 5:53PM	N	FRUSCIONE
01	700265	1714	ACIS-S	HETG	20.000000	19.830000	MRK421	archived	May 29 2000 11:57AM	N	FRUSCIONE
01	700202	442	ACIS-S	NONE	5.000000	4.976000	NGC526A	archived	Apr 23 2000 6:54AM	S	Wilson
01	570470	1520	ACIS-S	NONE	25.000000	24.035000	NGC3184	archived	Feb 3 2000 11:00AM	3	Schlegel
01	500093	364	HRC-I	NONE	50.000000	48.159000	PSRB0833-45	archived	Feb 21 2000 2:11AM	N	Helfand
01	500092	1518	HRC-I	NONE	50.000000	50.215008	PSRB0833-45	archived	Jan 20 2000 12:33AM	N	Helfand
01	400112	1846	ACIS-S	NONE	5.000000	4.630000	XTEJ1550-564	archived	Sep 11 2000 5:10AM	D	Tomsick
01	400111	1845	ACIS-S	NONE	5.000000	5.164000	XTEJ1550-564	archived	Aug 21 2000 9:08AM	D	Tomsick
01	400110	1701	ACIS-S	LETG	30.000000	27.830000	XTEJ1118+48	archived	Apr 18 2000 6:36PM	D	McClintock
01	400093	426	ACIS-S	HETG	20.000000	18.318000	CYGX-3	archived	Apr 6 2000 8:17PM	N	McCollough
01	400092	425	ACIS-S	HETG	20.000000	21.533000	CYGX-3	archived	Apr 4 2000 2:05PM	N	McCollough
01	300053	2336	ACIS-S	HETG	20.000000	19.222000	ZANDROMEDAE	archived	Nov 13 2000 3:19PM	D	Charles
01	300041	1706	ACIS-S	HETG	60.000000	59.881000	EXHYA	archived	May 18 2000 9:59AM	D	Howell
01	300037	327	ACIS-S	NONE	5.000000	4.947000	Mispointing	archived	Feb 8 2000 4:18PM	D	DiStefano
01	100011	1464	HRC-S	LETG	14.760000	14.778000	JUPITER	archived	Nov 26 1999 2:35PM	3	WAITE
01	100011	1465	HRC-S	LETG	23.150000	23.418000	JUPITER	archived	Nov 26 1999 8:07PM	3	WAITE
01	100010	960	ACIS-S	NONE	22.600000	22.380800	JUPITER	archived	Nov 25 1999 7:38PM	3	WAITE
01	100010	1463	ACIS-S	NONE	22.600000	22.364800	JUPITER	archived	Nov 26 1999 2:10AM	3	WAITE

---

Canceled DDT Observations

Cycle	Sequence Number	ObsID	Instrument	Grating	Approved Exposure Time	Target	Status	PI Name
08	900737	9576	ACIS-I	NONE	2.000000	ChandraDeepField-S	canceled	Tananbaum
08	900737	9577	ACIS-I	NONE	30.000000	ChandraDeepField-S	canceled	Tananbaum
07	300182	7301	ACIS-S	HETG	15.000000	RSOph	canceled	Starrfield
07	300181	7300	ACIS-S	HETG	15.000000	RSOph	canceled	Starrfield
07	300180	7299	HRC-S	LETG	20.000000	RSOph	canceled	Starrfield
07	200461	8475	ACIS-I	NONE	10.000000	L1415EXor	canceled	KASTNER
06	200365	6206	ACIS-S	NONE	8.333333	V1118Ori	canceled	Audard
06	200364	6205	ACIS-S	NONE	8.333333	V1118Ori	canceled	Audard
04	500414	4450	ACIS-S	NONE	20.000000	SN2002ic	canceled	Hughes
04	100052	5328	HRC-I	NONE	2.500000	Moon	canceled	Drake
04	100052	5313	HRC-I	NONE	4.700000	Moon	canceled	Drake
03	700614	3421	ACIS-S	NONE	30.000000	MGJ0414+0534	canceled	Chartas
03	700613	3420	ACIS-S	NONE	30.000000	MGJ0414+0534	canceled	Chartas
03	500299	3497	ACIS-S	NONE	25.000000	SN2001IG	canceled	Schlegel
03	500290	3440	ACIS-S	NONE	25.000000	SN2002AP	canceled	Schlegel
03	500289	3439	ACIS-S	NONE	25.000000	SN2002AP	canceled	Schlegel
03	500288	3438	ACIS-S	NONE	25.000000	SN2002AP	canceled	Schlegel
03	400269	3723	ACIS-S	NONE	30.000000	MACHO-99-BLG-22	canceled	Reynolds
03	400245	3470	ACIS-S	NONE	10.000000	RXJ170930.2-263927	canceled	Jonker
03	400244	3469	ACIS-S	NONE	10.000000	RXJ170930.2-263927	canceled	Jonker
03	400243	3468	ACIS-S	NONE	10.000000	RXJ170930.2-263927	canceled	Jonker
03	400242	3467	ACIS-S	NONE	5.000000	RXJ170930.2-263927	canceled	Jonker
03	400241	3466	ACIS-S	NONE	5.000000	RXJ170930.2-263927	canceled	Jonker
03	400240	3465	ACIS-S	NONE	5.000000	RXJ170930.2-263927	canceled	Jonker
03	300088	3435	ACIS-S	NONE	25.000000	IMNORMAE	canceled	Starrfield
03	100033	3446	ACIS-S	NONE	8.000000	C/2002C1	canceled	Dennerl
02	700611	3398	ACIS-S	NONE	30.000000	MGJ0414+0534	canceled	Chartas
02	700610	3397	ACIS-S	NONE	30.000000	MGJ0414+0534	canceled	Chartas
02	700609	3396	ACIS-S	NONE	30.000000	MGJ0414+0534	canceled	Chartas
02	500202	2461	ACIS-S	NONE	5.000000	SGR1900+14	canceled	Kouveliotou
02	500201	2460	ACIS-S	NONE	5.000000	SGR1900+14	canceled	Kouveliotou
02	500198	2457	ACIS-S	NONE	0.000000	SGR1900+14	canceled	Kulkarni
02	300064	2511	ACIS-S	NONE	10.000000	WZSGE	canceled	Wheatley
02	300063	2510	ACIS-S	NONE	10.000000	WZSGE	canceled	Wheatley
02	300062	2509	ACIS-S	NONE	10.000000	WZSGE	canceled	Wheatley
02	300055	2466	ACIS-S	NONE	0.000000	CIAQL	canceled	Greiner
01	400113	1847	ACIS-S	NONE	5.000000	XTEJ1550-564	canceled	Tomsick
01	100027	2517	ACIS-S	NONE	9.000000	COMET19P/BORRELLY	canceled	Dennerl
01	100027	3377	ACIS-S	NONE	9.000000	COMET19P/BORRELLY	canceled	Dennerl
01	100027	3378	ACIS-S	NONE	9.000000	COMET19P/BORRELLY	canceled	Dennerl
01	100027	3379	ACIS-S	NONE	9.000000	COMET19P/BORRELLY	canceled	Dennerl

Sequence Number: 400933

Title : The cold neutron star in the long-duration transient AX J1754.2-2754
PI: Keek
Abstract: As written in Atel#1575, J1754j went to quiescence after a long
outburst. The source is an ultra-compact X-ray binary. The long
outburst duration and ultra-compact nature make this source resemble
H1905+000. The current Chandra non-detection, based on a 2 ks-long
observation, shows that J1754 is very faint already given that the long
outburst duration facilitates a high neutron star crust temperature.
The low flux and the relatively high N_H forego triggering the Wijnands
et al. ToO (which is based on measuring neutron star X-ray spectra).
Instead, we propose to obtain one 30 ks observation to search for J1754
in quiescence. In 30 ks we would reach a flux limit of ~5E-15 erg cm-2
s-1, yielding a luminosity limit of 5E31 erg/s. A non-detection would
make J1754 the second UCXB to be very cold (after H1905) suggesting
that the UC nature and hence the composition of the accreted material
is important for setting the NS temperature and or the cooling rate.

Sequence Number: 400934

Title : Locating the Ultraluminous Supersoft X-ray Source in NGC300
PI: Kong
Abstract: We propose to obtain the first Chandra image of the nearest very
luminous (Lx=1e38-1e39 erg/s) recurrent supersoft X-ray source (SSS)
currently in outburst. The source, located in NGC300, has a 5.4-hr
period and is ultraluminous in the high state. In AO-7, we obtained a
Chandra HRC-I observation to locate the position in order to search for
the optical counterpart in archival HST and VLT images. However, the
source was off with a 99% upper limit of 3.5e37 erg/s (ATel#1560).
NGC300 was observed with Swift on 2008 5/20, 6/4, and 6/19. The SSS was
clearly detected with XRT in all observations and all the source
photons are from below 0.7 keV, consistent with a SSS. The 0.2-2 keV
unabsorbed luminosity is about 1.5-2e38 erg/s (ATel#1560). If the
companion can be identified, we can set a strong constraint on the
donor and conclude whether the compact object is an IMBH. It would also
provide important information about the formation of SSS in a black
hole binary system.

Sequence Number: 400932

Title : Chandra follow up of XTE J1719-291
PI: Sala
Abstract: XTE J1719-291 is a new, faint X-ray transient, discovered with RXTE/PCA
on March 21 (ATel#1442). PCA monitoring indicated an initial rise
followed by a delcine. Swift/XRT follow up on 30 March and April 3
provided the position with an uncertainty of 3.8 arcsec and confirmed
the decline (ATel#1451,#1467). The XRT spectrum was fit with an
absorbed powerlaw with nH=6e21cm-2 and a photon index of 3. A more
recent Swift observation on April 9 showed a re-brightening by a factor
10 and a hardening of the spectrum (ATel#1467), with a photon index of
2.5 and a 2-10 keV absorbed flux of 1.4e-11 erg/cm2/s. There are no
known objects in Simbad or ROSAT catalogues within the XRT error
circle. To identify the IR counterpart, we observed XTE J1719 on April
11 in 7 bands (grizJHK) with GROND at the MPI/ESO 2.2m telescope at La
Silla. We find 13 near-infrared sources in the XRT error circle. The
transient properties are unusual, so it's unclear what kind of NIR
variability is to be expected.

Sequence Number: 701771

Title : Chandra observation of a flaring galaxy with strong optical
emission-line light echo
PI: Komossa
Abstract: We have discovered among SDSS-DR6, in Dec. 2007, a galaxy which is
unique in showing super-strong high-ionization iron lines and very
unusual double-peaked Balmer lines which are fading away, but have not
yet disappeared. The high degree of line ionization implies that we see
the light-echo of an (unobserved) EUV-X-ray flare. We have confirmed,
with optical ToO photometry on Jan. 1, 2008 the low-energy tail of this
flare in the optical and NIR. Only a few X-ray flaring galaxies are
known. This is the first time we have seen such a broad line and
continuum response. With Chandra, we will for the first time detect the
actual X-rays from this flare, characterize the X-ray emission, locate
the flare within 1 kpc of the nucleus, and test the favored scenario -
tidal disruption of a star - before the flare has faded away. Depending
on the measured source's X-ray brightness, we will then consider X-ray
monitoring to map the emission-line changes in response to the X-ray
fading.

Sequence Number: 501018

Title : An Unexpected Re-Brightening in SHB 080503: Afterglow or
mini-Supernova, 2nd Epoch
PI: Butler
Abstract: Gaining a deep understanding of the origin and nature of Short
(duration) Hard (spectrum) Gamma-ray Bursts (SHBs) is one of the last
frontiers of GRB research. We can now say almost for certain that the
progenitors of SHBs are different from those of Long-Soft GRBs (LSBs).
This is based almost entirely on observations of the host galaxies of
SHBs, which seem to be an older population than the hosts of LSBs:
whereas the 50+ hosts of LSBs appear to be underluminous star bursts,
and a handful of the bursts themselves have been directly associated
with supernova (SN) explosions. SHB hosts span the range from giant
elliptical to faint blue galaxies. A multi-wavelength campaign is
critical to ameliorate the large theoretical uncertainty as to what
types of progenitor systems --- a possible ``mini-SN'' (Li \& Paczynski
1998) from a compact object mergers or binary WD merger (Levan et al.
2006) --- are at the origin of SHBs.

Sequence Number: 501017

Title : An Unexpected Re-Brightening in SHB 080503: Afterglow or
mini-Supernova
PI: Butler
Abstract: Gaining a deep understanding of the origin and nature of Short
(duration) Hard (spectrum) Gamma-ray Bursts (SHBs) is one of the last
frontiers of GRB research. We can now say almost for certain that the
progenitors of SHBs are different from those of Long-Soft GRBs (LSBs).
This is based almost entirely on observations of the host galaxies of
SHBs, which seem to be an older population than the hosts of LSBs:
whereas the 50+ hosts of LSBs appear to be underluminous star bursts,
and a handful of the bursts themselves have been directly associated
with supernova (SN) explosions. SHB hosts span the range from giant
elliptical to faint blue galaxies. A multi-wavelength campaign is
critical to ameliorate the large theoretical uncertainty as to what
types of progenitor systems --- a possible ``mini-SN'' (Li \& Paczynski
1998) from a compact object mergers or binary WD merger (Levan et al.
2006) --- are at the origin of SHBs.

Sequence Number: 501014

Title : Chandra observations of a nearby supernova
PI: Roelofs
Abstract: We propose Chandra observations of the nearby type-Ia supernova
SN2007on to characterize its X-ray emission, which will help us
constrain the nature of the progenitor. We ask for an initial 40ks
which will enable us to put useful constraints on its X-ray flux.

Sequence Number: 501014

Title : Chandra observations of a nearby supernova
PI: Roelofs
Abstract: We propose Chandra observations of the nearby type-Ia supernova
SN2007on to characterize its X-ray emission, which will help us
constrain the nature of the progenitor. We ask for an initial 40ks
which will enable us to put useful constraints on its X-ray flux.

Sequence Number: 400931

Title : A rare transient in M81: a merger event?
PI: Jonker
Abstract: A recently discovered optical transient (OT) in M81 (atel #1330) can
not be explained by a known transient event, it is a very good merger
candidate (NS-NS, BH-NS). Distinguishing properties are: decay rate is
too fast for a NOVA, optical brightness is too low for a SN (MV=-7.3),
the K-band magnitude and NIR colors rule out a foreground flaring
M-dwarf, the source is too bright for an transient X-ray binary. We
searched the Chandra archive for the presence of an X-ray source. None
was found even after stacking all the ACIS data. A transient X-ray
source was observed on 2000-05-07 in Chandra OBS ID 735 close to the
position of the OT. However, the distance to the position of the OT was
2.8 arcsec which is too much for the two events to come from the same
source. The optical decay time matches the predicted decay time for a
merger event (Sylvestre 2003). If this OT is a merger event, X-rays are
predicted to be emitted due to either fall back or radio-active decay
of ejected material.

Sequence Number: 200526

Title : The physics of flares in young stellar objects
PI: Micela
Abstract: Flares are the most extreme manifestation of stellar activity. Magnetic
reconnection produces fast electrons that hit the stellar surface to
produce chromospheric material evaporation. Non-thermal heating shows
up as impulsive flares in optical and hard X-rays, and evaporation as
longer soft X-ray flares. Multi-band observations covering thermal and
non-thermal components are essential to understand the physics of
flaring. The CoRoT space telescope will continuously observe the star
forming region NGC2264 for 20 days in March 2008 in the optical with
unprecedented photometric precision and with a temporal resolution of
10s of sec, ideal for the detection of impulsive events. We ask for two
100ksec observations in the two most populated cluster regions during
the CoRoT observation to simultaneously study the non-thermal (CoRoT)
and the thermal (Chandra) components of flares. 100s of flaring sources
have already been detected in a single ACIS field in NGC2264 (Flaccomio
et al. 2006).

Sequence Number: 200526

Title : The physics of flares in young stellar objects
PI: Micela
Abstract: Flares are the most extreme manifestation of stellar activity. Magnetic
reconnection produces fast electrons that hit the stellar surface to
produce chromospheric material evaporation. Non-thermal heating shows
up as impulsive flares in optical and hard X-rays, and evaporation as
longer soft X-ray flares. Multi-band observations covering thermal and
non-thermal components are essential to understand the physics of
flaring. The CoRoT space telescope will continuously observe the star
forming region NGC2264 for 20 days in March 2008 in the optical with
unprecedented photometric precision and with a temporal resolution of
10s of sec, ideal for the detection of impulsive events. We ask for two
100ksec observations in the two most populated cluster regions during
the CoRoT observation to simultaneously study the non-thermal (CoRoT)
and the thermal (Chandra) components of flares. 100s of flaring sources
have already been detected in a single ACIS field in NGC2264 (Flaccomio
et al. 2006).

Sequence Number: 900737

Title : The Chandra Deep Field-South Survey: A Public Chandra Legacy
PI: Tananbaum
Abstract: Director's Discretionary observation to increase the exposure on the
CDFS from 1Msec to 2 Msec

Sequence Number: 900737

Title : The Chandra Deep Field-South Survey: A Public Chandra Legacy
PI: Tananbaum
Abstract: Director's Discretionary observation to increase the exposure on the
CDFS from 1Msec to 2 Msec

Sequence Number: 900737

Title : The Chandra Deep Field-South Survey: A Public C