Accepted Cycle 15 Observing Proposals

AGN & QUASARS

Proposal Number	Subject Category	PI Name	Type	Time (ks)	Title
15700077	ACTIVE GALAXIES AND QUASARS	Brandt	GO	60	The Variable Absorption and Disrupting X-ray Jet of the Broad Absorption Line Radio-Loud Quasar PG 1004+130
15700078	ACTIVE GALAXIES AND QUASARS	Harris	TOO	35	Triggering Chandra to Detect an X-ray Counterpart to TeV Flaring from M87 During Cycle 15
15700081	ACTIVE GALAXIES AND QUASARS	Harris	GO	10	Keeping Tabs on the Unique Jet in M87 During Cycle 15
15700091	ACTIVE GALAXIES AND QUASARS	Hardcastle	GO	140	Jet-driven outflows in radio galaxies
15700111	ACTIVE GALAXIES AND QUASARS	Massaro	GO	276	Continuing the Chandra 3CR Snapshot Survey: 23 Radio Sources with 0.5
15700182	ACTIVE GALAXIES AND QUASARS	Reines	GO	200	AGN-Triggered Star Formation in the Dwarf Galaxy Henize 2-10?
15700192	ACTIVE GALAXIES AND QUASARS	Siemiginowska	GO	85	Deep Chandra Imaging of Two Youngest Radio Sources
15700338	ACTIVE GALAXIES AND QUASARS	Satyapal	GO	152	PRE-SELECTING DUAL AGN CANDIDATES USING WISE: A CHANDRA PILOT STUDY
15700344	ACTIVE GALAXIES AND QUASARS	Piconcelli	GO	50	Chandra imaging of the bright Compton-thick Seyfert galaxy ESO 138-G1
15700355	ACTIVE GALAXIES AND QUASARS	Braito	GO	200	Probing the circumnuclear region of NGC 7582
15700378	ACTIVE GALAXIES AND QUASARS	Wilkes	GO	200	Probing dark matter in the luminous radio galaxy 3C220.3 and the structure of the z=2.22 SMG/AGN it is lensing.
15700397	ACTIVE GALAXIES AND QUASARS	Tombesi	LP	500	Unifying X-ray winds in radio galaxies with Chandra HETG
15700418	ACTIVE GALAXIES AND QUASARS	Worrall	GO	190	Testing relativistic feedback at crucial jet power
15700425	ACTIVE GALAXIES AND QUASARS	Kaufmann	TOO	30	Exploring the X-ray - TeV connection in BL Lacs on short timescales
15700482	ACTIVE GALAXIES AND QUASARS	Lohfink	GO	50	The mystery of NGC 1377 -- AGN feedback in a low mass galaxy?
15700485	ACTIVE GALAXIES AND QUASARS	Vignali	GO	140	Probing black hole accretion in binary quasars at high redshifts
15700502	ACTIVE GALAXIES AND QUASARS	Kraemer	GO	250	Resolved Spectroscopy of the Extended X-ray Emission in NGC 4151: New Insights into AGN-driven Outflows
15700509	ACTIVE GALAXIES AND QUASARS	Levan	GO	50	LATE TIME MONITORING OF THE EXCEPTIONAL TIDAL DISRUPTION EVENT SWIFT J1644+57
15700510	ACTIVE GALAXIES AND QUASARS	Fabbiano	GO	250	THE NUCLEAR FE- K SOURCES OF THE MERGER ULIRG ARP220
15700519	ACTIVE GALAXIES AND QUASARS	Ponti	TOO	280	X-ray monitoring of Sgr A* during outburst
15700542	ACTIVE GALAXIES AND QUASARS	Lal	GO	36	A Chandra Study of Nearby Hybrid Morphology Radio Source
15700554	ACTIVE GALAXIES AND QUASARS	Schirmer	GO	190	Studying AGN evolution with ionization echoes
15700595	ACTIVE GALAXIES AND QUASARS	Mathur	GO	100	The curious case of Mrk~590
15700675	ACTIVE GALAXIES AND QUASARS	Chartas	GO	100	The Ultrafast Outflow of the Lensed z=1.51 AGN HS 0810+2554
15700719	ACTIVE GALAXIES AND QUASARS	Comerford	GO	155	A Pilot Search for Spatially Offset AGN in Galaxy Merger Remnants

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700077

Title: The Variable Absorption and Disrupting X-ray Jet of the Broad Absorption Line Radio-Loud Quasar PG 1004+130

Type: GO Total Time (ks): 60

PI Name: William Brandt

We propose non-simultaneous joint Chandra (60 ks), XMM-Newton (60 ks), and HST (1 orbit) observations of the remarkable BAL RLQ PG 1004+130. These, in conjunction with our previous X-ray/UV coverage, will yield (1) one of the most comprehensive X-ray spectral monitoring campaigns of a variable BAL quasar undertaken, probing multi-year and multi-month timescales to constrain the nature of the X-ray absorber; (2) the highest S/N X-ray spectra of a BAL RLQ currently available, enabling modeling of X-ray absorption and the underlying continuum; and (3) the deepest X-ray imaging yet obtained of a disrupting jet in a hybrid morphology radio source, allowing tests for jet flux variability and characterization of the morphologies and spectra of the jet and diffuse emission.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
10:07:26.10	+12:48:56.20	PG 1004+130	ACIS-S	NONE	60

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700078

Title: Triggering Chandra to Detect an X-ray Counterpart to TeV Flaring from M87 During Cycle 15

Type: TOO Total Time (ks): 35

PI Name: Daniel Harris

From VERITAS, HESS, and MAGIC observations, it appears that there are TeV flaring states for M87 which last a few days to a week or more and provide many detections at a level significantly higher than the quiet state. Because we model the TeV emission as IC scattering by the same electrons responsible for X-ray synchrotron emission, we expect that TeV variability will be mirrored in the X-rays. To determine the location of TeV flaring, to further constrain X-ray time scales, and to obtain simultaneous photometry to refine sync/IC calculations, we request a Chandra ToO program to be triggered by TeV flaring. We request 35ks, divided into 7 daily 5ks observations so as to construct a light curve for comparison with those obtained by the Cherenkov observatories.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
12:30:49.00	+12:23:30.00	M87	ACIS-S	NONE	35

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700081

Title: Keeping Tabs on the Unique Jet in M87 During Cycle 15

Type: GO Total Time (ks): 10

PI Name: Daniel Harris

We request 2 observations of the M87 jet at 5 ks each. The first should be at the end of Nov 2013 and the second in 2014 Apr. There are three reasons for this modest proposal: (1) If our M87 ToO is triggered, we need to know the intensity of each component in the jet before the onset of TeV flaring. (2) To ascertain if the nucleus, knot HST-1, or knot D (known to be variable in the optical) have increased substantially since our most recent observation (2013 Mar): if we were to find a substantial change, a DDT request would be instigated. (3) To obtain quasi simultaneous X-ray and UV (HST proposal) data in order to evaluate long term changes in the ratio of UV to X-ray intensities for all jet knots.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
12:30:49.00	+12:23:30.00	M87	ACIS-S	NONE	10

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700091

Title: Jet-driven outflows in radio galaxies

Type: GO Total Time (ks): 140

PI Name: Martin Hardcastle

Extended optical emission-line regions (EELR) in radio galaxies (RG) are often found to be driven by strong interactions between the jet and the cold IGM; the mass in cold gas in these outflows is relatively small. We have recently found extended X-ray emission coincident with the EELR in two nearby RG, and, ruling out photoionization on energetic and morphological grounds, have shown that all the data are consistent with the X-rays being from a massive outflow of thermal gas in which the cold EELR material is embedded. Combining optical lines and X-rays, we can measure both the mass and the dynamics of the outflows. We wish to test our model by observing a small sample of well-studied RG with EELR, thereby constraining the outflow energetics and its scaling with jet/AGN power.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
23:16:35.20	+04:05:18.20	3C459	ACIS-S	NONE	62
22:53:03.20	-40:57:46.20	PKS 2250-41	ACIS-S	NONE	8

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700111

Title: Continuing the Chandra 3CR Snapshot Survey: 23 Radio Sources with 0.5
Type: GO Total Time (ks): 276

PI Name: Francesco Massaro

In the past decade many 3CR sources have been observed by Chandra and in particular, during AO9, AO12 and AO13, a Chandra snapshot survey has been successfully carried out for all the unobserved 3CR sources with z<0.5. The results confirm our expectations and this proposal requests to extend these X-ray observations of unobserved 3CR sources at higher redshift, to complete the whole 3CR sample. The proposed observations will yield detections of new jets, hotspots, nuclei and galaxy clusters as occurred in our previous low redshift sources. This Chandra data set will also provide a versatile, complete, and uniform database that will be a valuable resource for the astronomical community and since it is designed as a `legacy' program, we waive proprietary rights.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
01:10:18.70	+31:47:20.40	3C34	ACIS-S	NONE	12
01:26:44.40	+33:13:11.20	3C41	ACIS-S	NONE	12
01:31:21.80	+06:23:40.80	3C44	ACIS-S	NONE	12
01:55:30.20	+43:45:55.40	3C54	ACIS-S	NONE	12
01:57:10.50	+28:51:37.50	3C55	ACIS-S	NONE	12
03:43:30.00	+04:57:48.50	3C93	ACIS-S	NONE	12
05:31:29.40	+06:30:24.90	3C142.1	ACIS-S	NONE	12
06:13:50.10	+26:04:36.70	3C154	ACIS-S	NONE	12
06:51:15.30	+45:09:26.20	3C169.1	ACIS-S	NONE	12
09:08:50.60	+37:48:19.20	3C217	ACIS-S	NONE	12
09:42:15.40	+13:45:50.50	3C225B	ACIS-S	NONE	12
10:07:60.00	+07:30:16.30	3C237	ACIS-S	NONE	12
10:58:58.80	+43:01:23.10	3C247	ACIS-S	NONE	12
12:24:28.50	+42:06:36.30	3C272	ACIS-S	NONE	12
12:51:43.60	+50:34:24.90	3C277	ACIS-S	NONE	12
12:53:33.00	+15:42:29.20	3C277.2	ACIS-S	NONE	12
13:42:13.30	+60:21:42.80	3C288.1	ACIS-S	NONE	12
13:50:42.00	+64:29:30.60	3C292	ACIS-S	NONE	12
13:54:41.00	+16:14:50.10	3C293.1	ACIS-S	NONE	12
15:41:45.50	+60:15:35.00	3C323	ACIS-S	NONE	12
04:12:22.60	-00:59:32.40	3C107	ACIS-S	NONE	12
04:20:22.20	+17:53:55.20	3C114	ACIS-S	NONE	12

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700182

Title: AGN-Triggered Star Formation in the Dwarf Galaxy Henize 2-10?

Type: GO Total Time (ks): 200

PI Name: Amy Reines

We have identified a low-luminosity AGN at the center of the dwarf starburst galaxy Henize 2-10 (Reines et al. 2011). This unique galaxy offers the first opportunity to study the interplay between black hole growth and star formation in physical conditions similar to those expected in the early Universe. Existing multi-wavelength observations are suggestive of AGN-triggered star formation in the central region of the galaxy, but definitive evidence is lacking. Our proposal aims to test this positive AGN-feedback hypothesis using deep Chandra imaging to study the morphology and spectral properties of X-ray emitting structures in the galaxy, including a tentatively detected jet and bow-shock.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
08:36:15.10	-26:24:34.10	He 2-10	ACIS-S	NONE	200

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700192

Title: Deep Chandra Imaging of Two Youngest Radio Sources

Type: GO Total Time (ks): 85

PI Name: Aneta Siemiginowska

We propose imaging studies with Chandra of two young radio sources with measured kinematic ages < 300 years. Our main goals are to establish their X-ray properties, determine the origin of the X-ray emission, study properties of their nucleus and environment. These young radio sources are in an important phase of a highly supersonic expansion and drive strong shocks into external medium. Such interactions are critical for 'feedback' that is not yet understood. The new X-ray data will allow to investigate the dynamics of such interactions in the youngest radio sources which are impacting directly the nuclear regions of their host galaxies.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
17:23:41.00	-65:00:36.60	PKS 1718-649	ACIS-S	NONE	50
14:07:00.30	+28:27:14.00	OQ280	ACIS-S	NONE	35

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700338

Title: PRE-SELECTING DUAL AGN CANDIDATES USING WISE: A CHANDRA PILOT STUDY

Type: GO Total Time (ks): 152

PI Name: Shobita Satyapal

Despite decades of searching, observationally confirmed cases of binary AGNs are extremely rare, and most have been discovered serendipitously. Using the all-sky WISE survey, we identified a population of ~100 strongly interacting galaxies that display extreme red mid-IR colors thus far exclusively associated in extragalactic sources with powerful AGNs. These galaxies are optically quiescent suggesting that they capture a population of binary AGNs that cannot be found through optical studies.We propose to observe with Chandra the 10 brightest dual AGN candidates with nuclear pair separations < 10 kpc. The exquisite spatial resolution and sensitivity of Chandra are required to confirm the presence of dual AGNs in these targets and constrain their properties.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
10:36:31.90	+02:21:43.90	SDSSJ1036+0221	ACIS-S	NONE	3
01:22:18.10	+01:00:25.90	SDSSJ0122+0100	ACIS-S	NONE	5
10:45:18.00	+35:19:13.10	SDSSJ1045+3519	ACIS-S	NONE	5
11:26:19.40	+19:13:29.60	SDSSJ1126+1913	ACIS-S	NONE	15
13:06:53.60	+07:35:18.20	SDSSJ1306+0735	ACIS-S	NONE	16
12:21:05.00	+11:37:52.30	SDSS2210+1137	ACIS-S	NONE	4

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700344

Title: Chandra imaging of the bright Compton-thick Seyfert galaxy ESO 138-G1

Type: GO Total Time (ks): 50

PI Name: Enrico Piconcelli

We propose to perform the first Chandra observation of the bright Compton-thick Seyfert galaxy ESO 138-G1. Such a Chandra observation is timely and relevant: its combination with recent XMM-Newton deep spectroscopy will enable us to study, in unprecedented detail, the morphology and the origin of the X-ray emission from this nearby galaxy (1 arsec = 180 pc), which shows unambiguous evidence of extended (possibly AGN-driven) component in the optical/UV band.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
16:51:20.10	-59:14:04.20	ESO138-G1	ACIS-S	NONE	50

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700355

Title: Probing the circumnuclear region of NGC 7582

Type: GO Total Time (ks): 200

PI Name: Valentina Braito

NGC7582 is a bright and nearby Seyfert 2 and a prototype for the presence of multiple absorbers and emitters. Its X-ray variability implies the presence of an absorber located at the distance of the BLR. The X-ray spectrum is rich in emission lines suggesting the presence of photoionized emitters. We propose to map these circumnuclear emitting/absorbing regions through a deep grating observation with the Chandra-HETG. The main goals of the proposal are: (a) use the unique high spectral resolution to resolve for the first time the Fe K emission line profile and therefore the location of the material, by measuring with high precision its centroid energy, FWHM and flux, (b) use the high spectral and spatial resolution of the HETG detectors to map the circum-nuclear photoionized emitters.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
23:18:23.50	-42:22:14.00	NGC 7582	ACIS-S	HETG	200

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700378

Title: Probing dark matter in the luminous radio galaxy 3C220.3 and the structure of the z=2.22 SMG/AGN it is lensing.

Type: GO Total Time (ks): 200

PI Name: Belinda Wilkes

The radio galaxy 3C 220.3 (z=0.685) is lensing a submm galaxy (SMG) at z=2.221 housing an AGN. This unique system allows accurate estimates of both stellar and dark mass in the luminous radio galaxy. In addition, the lensing magnification of 7 offers an unprecedented view of the interaction between star formation and AGN feedback in a luminous, dusty galaxy at the peak epoch of cosmic star formation. Our previous 10ks Chandra observation shows X-ray emission throughout the system, including the SMG, but with too few counts to identify the origin(s). We propose deeper Chandra and HST observations to (1) locate the X-ray sources, measure the X-ray properties and independently estimate the bolometric luminosities of both AGN (2) better map the offset between the SMG's UV and dust emission.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
09:39:23.40	+83:15:26.10	3C 220.3	ACIS-S	NONE	200

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700397

Title: Unifying X-ray winds in radio galaxies with Chandra HETG

Type: LP Total Time (ks): 500

PI Name: Francesco Tombesi

X-ray winds are routinely observed in the spectra of Seyfert galaxies. They can be classified as warm absorbers (WAs), with v~100-1,000km/s, and ultra-fast outflows (UFOs), with v>10,000km/s. In stark contrast, the lack of sensitive enough observations allowed the detection of WAs or UFOs only in very few radio galaxies. Therefore, we propose to observe a small sample of three radio galaxies with the Chandra HETG - 3C111 for 150ks, 3C390.3 for 150ks and 3C120 for 200ks - to detect and study in detail their WAs. We will quantify the importance of mechanical feedback from winds in radio galaxies and compare them to the radio jet power. We will also test whether WAs and UFOs can be unified in a single, multi-phase and multi-scale outflow, as recently reported for Seyferts.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
04:18:21.30	+38:01:35.80	3C 111	ACIS-S	HETG	150
18:42:09.00	+79:46:17.10	3C 390.3	ACIS-S	HETG	150
04:33:11.10	+05:21:15.60	3C 120	ACIS-S	HETG	200

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700418

Title: Testing relativistic feedback at crucial jet power

Type: GO Total Time (ks): 190

PI Name: Diana Worrall

PKS B2152-699 offers an exceptional opportunity to resolve long-standing questions about the physics of energy transfer in jet flows. It displays very well-defined offsets between the X-ray, optical and radio centroids of one of its hotspots, from which we can test whether the jet flow remains relativistic for about 150 kpc, and identify the particle acceleration and energy-loss processes involved. It also shows strong jet deflections closer to the AGN, apparently associated with highly-ionized gas clouds, where measurements of the X-ray temperature will tell us about energy transfers to the clouds. Both tests require an additional 190 ks of ACIS-S data to combine with the existing data.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
21:57:07.40	-69:41:16.50	PKS B2152-699-HIC	ACIS-S	NONE	190

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700425

Title: Exploring the X-ray - TeV connection in BL Lacs on short timescales

Type: TOO Total Time (ks): 30

PI Name: Sarah Kaufmann

We propose to perform one ToO for a full night (30 ks) of simultaneous observation with Chandra and H.E.S.S., on a flaring TeV blazar with flux high enough to constrain both spectra on hour timescales or less. Our goal is to investigate with unprecedented detail the intra-night and sub-hour variability in TeV blazars, as strikingly revealed by H.E.S.S. observations on PKS 2155-304 (few minutes flux doubling timescales). The aim is to shed light on the origin of the gamma-ray emission and on the relation between X-ray and gamma-ray emissions.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
		flaring TeV BLLac	ACIS-S	NONE	30

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700482

Title: The mystery of NGC 1377 -- AGN feedback in a low mass galaxy?

Type: GO Total Time (ks): 50

PI Name: Anne Lohfink

Active galactic nuclei (AGN) influence their surroundings via feedback processes and contribute significantly to the evolution of their host galaxies. While this is well established today, AGN feedback has only been observed in high mass galaxies. This raises the question whether AGN feedback is genuinely absent in low mass galaxies. Understanding the feedback processes operating in these galaxies is in particular crucial as AGN feedback would have a much higher impact on their evolution. We therefore propose to observe NGC 1377, a rare low mass galaxy showing indications for AGN activity and feedback, for 50 ks. If confirmed, this object will be ideal to further constrain the existing galaxy evolution and AGN feedback models.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
03:36:39.10	-20:54:08.10	NGC 1377	ACIS-S	NONE	50

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700485

Title: Probing black hole accretion in binary quasars at high redshifts

Type: GO Total Time (ks): 140

PI Name: Cristian Vignali

We propose to observe two optically selected broad-line quasar pairs at z=3.0-3.3 with separations <70 kpc. These QSOs, with BH masses larger than 10^9 Msun, are likely associated to the most massive peaks of the primordial dark matter halos. The main goal of this project is (i) to characterize, for the first time, the X-ray properties of AGN pairs at high redshifts and (ii) check whether imprints or hints for interactions are present in X-rays, as expected by models of galaxy mergers even on the scales probed by these quasar pairs. Indications of outflowing material (broad absorption lines) are present in the optical spectra of two quasars. This project is optimally suited for Chandra because of the close separation of our pairs (5.8-8.2 arcsec).

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
13:07:56.70	+04:22:15.60	SDSSJ130756.73+042215.57	ACIS-S	NONE	70
16:22:10.10	+07:02:15.30	SDSSJ162210.11+070215.34	ACIS-S	NONE	70

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700502

Title: Resolved Spectroscopy of the Extended X-ray Emission in NGC 4151: New Insights into AGN-driven Outflows

Type: GO Total Time (ks): 250

PI Name: Steven Kraemer

AGN feedback, in the form of winds or jets, is likely the mechanism that connects the growth of galactic bulges and their super-massive black holes. AGN-driven winds are most directly studied at the spatial scale of the narrow line region (NLR), but little is known of NLR X-ray emitting gas, which may be the dominant component in mass outflows. Given its brightness and orientation, the Seyfert 1 galaxy NGC 4151 is one of the few AGN for which we can resolve the X-ray NLR. We will obtain a 250 ksec Chandra/HETG observation, at a roll angle which will permit us to map the kinematics and ionization structure of the high-ionization gas. We will use these data to determine the mass outflow rate and kinetic luminosity of the X-ray gas, and, thus, its role in AGN feedback.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
12:10:32.60	+39:24:21.00	NGC4151	ACIS-S	HETG	250

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700509

Title: LATE TIME MONITORING OF THE EXCEPTIONAL TIDAL DISRUPTION EVENT SWIFT J1644+57

Type: GO Total Time (ks): 50

PI Name: Andrew Levan

The discovery of a population of relativistic tidal disruption events has opened a new window; viewing accretion around massive black holes from start to finish on short timescales, and offering a new route to probing the ubiquity of black holes in galaxies. Here we propose continued follow-up of the first, and by far best studied of the events - Swift J1644+57. Observing after the rapid switch off of the jet we will understand if the ongoing X-ray emission is due to the tidal flare itself, or if there is a faint underlying AGN. In turn, we will study the nature of the accretion and gain insights into what may have made Swift J1644+57 produce a jet. In concert with approved observations with HST and Spitzer this will create a dataset with legacy value on this rosetta stone object.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
16:44:49.90	+57:35:00.20	Swift J1644+57	ACIS-S	NONE	50

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700510

Title: THE NUCLEAR FE- K SOURCES OF THE MERGER ULIRG ARP220

Type: GO Total Time (ks): 250

PI Name: Giuseppina Fabbiano

We propose an in-depth investigation of the nuclei of Arp220, the nearest ULIRG, to constrain the relative contribution of AGN emission and strong shocks to the Fe-K band, where the nuclei are detected in sub-pixel images of the archival Chandra data. The proposed observations are key to firmly establishing the presence of a dual Compton Thick AGN. We will also re-examine the diffuse large-scale soft emission of Arp220, and investigate if the inner luminous plumes are AGN-powered. Their conical shape is suggestively similar to that of the ionization cones of Seyfert nuclei we have studied with Chandra (e.g. Mkn573).

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
15:34:57.10	+23:30:11.00	Arp220	ACIS-S	NONE	250

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700519

Title: X-ray monitoring of Sgr A* during outburst

Type: TOO Total Time (ks): 280

PI Name: Gabriele Ponti

In the event that the Galactic Centre super-massive black hole, SgrA*, goes into outburst (LSgrA*>=10^36$ erg S-1) during Cycle-15 we propose to trigger a 100ks HETG observation, followed by a monitoring campaign of several 40ks HETG observations. During such an outburst SgrA* will become the brightest AGN in the 2-10 keV sky. Our proposed observations will offer powerful new insights into the black hole accretion process.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
17:45:40.00	-29:00:28.10	Sgr A*	ACIS-S	HETG	280

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700542

Title: A Chandra Study of Nearby Hybrid Morphology Radio Source

Type: GO Total Time (ks): 36

PI Name: Dharam Lal

It has been suggested that the unusual morphology of `hybrid morphology radio sources', or HyMors, strongly constrains the theoretical mechanisms proposed for the Fanaroff-Riley (FR) morphological dichotomy. Here, we propose a Chandra study of a nearby HyMors, MRC0131-367, and request 36 ks Chandra time to test the hypothesis that external environmental factors influence the jet structure by carrying out a systematic investigation of its hot-gas environment. Our observations will help to answer the questions (i) `what causes the differences between FR-I and FR-II radio structures?', and (ii) `what role does the environment play in the relationship between these two?'

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
01:33:57.70	-36:29:36.00	MRC0131-367	ACIS-S	NONE	36

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700554

Title: Studying AGN evolution with ionization echoes

Type: GO Total Time (ks): 190

PI Name: Mischa Schirmer

"Green beans" are rare type-2 quasars with ultra-luminous extended emission line regions. Their [OIII] luminosities are amongst the highest known, 5-50 times higher than expected from nuclear mid-IR luminosity. This can only be explained by ionization echoes, i.e. the AGN have recently started shutting down. Ionization echoes reveal large changes in AGN activity, indicating that our understanding of SMBH accretion is incomplete. With Chandra we can detect even deeply buried AGN, confirm the ionization echoes, and learn about how GBs formed. As the echoes retain a memory of the AGN luminosity over the last 100,000 years, we can reconstruct similarly long AGN light curves, complementary to other variability studies. Therefore GBs offer a unique insight into SMBH growth.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
00:20:16.40	-05:31:26.00	J002016.4-053126	ACIS-S	NONE	30
00:24:34.90	+32:58:42.00	J002434.9+325842	ACIS-S	NONE	20
14:55:33.60	+04:46:43.00	J145533.6+044643	ACIS-S	NONE	20
15:05:17.60	+19:44:44.00	J150517.6+194444	ACIS-S	NONE	15
22:40:24.10	-09:27:48.00	J224024.1-092748	ACIS-S	NONE	15
20:50:58.00	+05:50:12.00	J205058.0+055012	ACIS-S	NONE	15
01:59:30.80	+27:03:02.00	J015930.8+270302	ACIS-S	NONE	30
14:41:10.90	+25:17:00.00	J144110.9+251700	ACIS-S	NONE	30
01:13:41.10	+01:06:08.00	J011341.1+010608	ACIS-S	NONE	15

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700595

Title: The curious case of Mrk~590

Type: GO Total Time (ks): 100

PI Name: Smita Mathur

Mrk 590 is presently in an unusual state. Its soft-excess has disappeared, its broad emission lines have disappeared, and it shows the presence of a relativistic outflow. All these observations could be related to each other and perhaps the underlying cause is a low accretion rate relative to Eddington. Our proposed observations with Chandra and HST will not only help to understand the curious case of Mrk 590, but also to answer some long-standing questions in AGN physics: What is the origin of the soft-excess?; What is the origin of the broad emission line region?; What is the launching mechanism of outflows? Mrk 590 provides us with an unique opportunity to find the underlying physics related to these apparently disparate phenomena.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
02:14:33.60	-00:46:00.30	Mrk590	ACIS-S	HETG	70

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700675

Title: The Ultrafast Outflow of the Lensed z=1.51 AGN HS 0810+2554

Type: GO Total Time (ks): 100

PI Name: George Chartas

Massive and ultrafast wide-angled outflows from AGN are one of the proposed feedback mechanisms that may provide the coupling of kinetic energy between quasars and their host galaxies. To further our understanding of the AGN's role in this process we propose joint Chandra and XMM observations of the outflow of the z=1.5 AGN HS 0810+2554. The factor of 120 lensing magnification of HS0810 makes this source exceptionally bright compared to other quasars with detected outflows at similar distances. We will also study the short and long-term variability of the X-ray outflow and the correlation of X-ray wind properties to the X-ray and UV spectral properties. The variability and correlation results will provide insight into the acceleration mechanism of the wind.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
08:13:31.30	+25:45:03.00	HS 0810+2554	ACIS-S	NONE	100

Subject Category: ACTIVE GALAXIES AND QUASARS

Proposal Number: 15700719

Title: A Pilot Search for Spatially Offset AGN in Galaxy Merger Remnants

Type: GO Total Time (ks): 155

PI Name: Julia Comerford

We request Chandra/ACIS-S observations (155 ks total) and HST imaging (10 orbits total) for a pilot study of 10 galaxies whose AGN emission lines are offset in velocity from systemic. These are candidates for offset AGN, which occur when one of the two supermassive black holes in a galaxy merger is active. We have carefully constructed our sample to remove cases where gas kinematics produce the velocity offsets, but Chandra and HST observations are necessary to confirm offset AGN as the AGN that are spatially offset from the primary galaxy centers. With the observations proposed here, we will carry out the first systematic search for offset AGN. We will use the results of this search to study the circumstances for triggering offset AGN, and to inform future searches for offset AGN.

R.A.	Dec.	Target Name	Det.	Grating	Exp.Time (ks)
13:46:40.80	+52:28:36.60	SDSS J134640.79+522836.6	ACIS-S	NONE	10
01:32:58.90	-10:27:07.00	SDSS J013258.92-102707.0	ACIS-S	NONE	15
08:39:03.00	+47:07:56.30	SDSS J083902.97+470756.3	ACIS-S	NONE	10
13:54:29.10	+13:27:57.20	SDSS J135429.05+132757.2	ACIS-S	NONE	10
10:55:53.60	+15:20:27.40	SDSS J105553.64+152027.4	ACIS-S	NONE	15
10:31:48.90	+01:07:22.60	SDSS J103148.90+010722.6	ACIS-S	NONE	20
16:30:07.60	+21:50:47.70	SDSS J163007.63+215047.7	ACIS-S	NONE	10
09:26:35.10	-00:26:03.60	SDSS J092635.14-002603.6	ACIS-S	NONE	15

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 © 1998-2024. All rights reserved.