577 citations · 4.5k across the 78 of their papers we have counts for
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The Most Powerful Lenses in the Universe: Quasar Microlensing as a Probe of the Lensing Galaxy
David Pooley, Timo Anguita, Saloni Bhatiani +14
Optical and X-ray observations of strongly gravitationally lensed quasars (especially when four separate images of the quasar are produced) determine not only the amount of matter…
Astro2020 Science White Paper - Quasar Microlensing: Revolutionizing our Understanding of Quasar Structure and Dynamics
Leonidas Moustakas, Matthew O'Dowd, Timo Anguita +20
Microlensing by stars within distant galaxies acting as strong gravitational lenses of multiply-imaged quasars, provides a unique and direct measurement of the internal structure o…
An Active Galactic Nucleus Caught in the Act of Turning Off and On
Julia M. Comerford, R. Scott Barrows, Francisco Müller-Sánchez +5
We present the discovery of an active galactic nucleus (AGN) that is turning off and then on again in the z=0.06 galaxy SDSS J1354+1327. This episodic nuclear activity is the resul…
Shocks and Spatially Offset Active Galactic Nuclei Produce Velocity Offsets in Emission Lines
Julia M. Comerford, R. Scott Barrows, Jenny E. Greene +1
While 2% of active galactic nuclei (AGNs) exhibit narrow emission lines with line-of-sight velocities that are significantly offset from the velocity of the host galaxy's stars, th…
Spatially Offset Active Galactic Nuclei. II: Triggering in Galaxy Mergers
R. Scott Barrows, Julia M. Comerford, Jenny E. Greene +1
Galaxy mergers are likely to play a role in triggering active galactic nuclei (AGN), but the conditions under which this process occurs are poorly understood. In Paper I, we constr…
Spatially Offset Active Galactic Nuclei I: Selection and Spectroscopic Properties
R. Scott Barrows, Julia M. Comerford, Jenny E. Greene +1
We present a sample of 18 optically-selected and X-ray detected spatially offset active galactic nuclei (AGN) from the Sloan Digital Sky Survey (SDSS). In 9 systems, the X-ray AGN…
Merger-driven Fueling of Active Galactic Nuclei: Six Dual and Offset Active Galactic Nuclei Discovered with Chandra and Hubble Space Telescope Observations
Julia M. Comerford, David Pooley, R. Scott Barrows +4
Dual active galactic nuclei (AGNs) and offset AGNs are kpc-scale separation supermassive black holes pairs created during galaxy mergers, where both or one of the black holes are A…
Stellar masses calibrated with micro-lensed quasars
Paul L. Schechter, Jeffrey A. Blackburne, David Pooley +1
We measure the stellar mass surface densities of early type galaxies by observing the micro-lensing of macro-lensed quasars caused by individual stars, including stellar remnants,…
A calibration of the stellar mass fundamental plane at z ~ 0.5 using the micro-lensing induced flux ratio anomalies of macro-lensed quasars
Paul L. Schechter, David Pooley, Jeffrey A. Blackburne +1
We measure the stellar mass surface densities of early type galaxies by observing the micro-lensing of macro-lensed quasars caused by individual stars, including stellar remnants,…
Extended X-ray Emission From a Quasar-Driven Superbubble
Jenny E. Greene, David Pooley, Nadia L. Zakamska +2
We present observations of extended, 20-kpc scale soft X-ray gas around a luminous obscured quasar hosted by an ultra-luminous infrared galaxy caught in the midst of a major merger…
Variability at the Edge: Optical Near/IR Rapid Cadence Monitoring of Newly Outbursting FU Orionis Object HBC 722
Joel D. Green, Paul Robertson, Giseon Baek +7
We present the detection of day-timescale periodic variability in the r-band lightcurve of newly outbursting FU Orionis-type object HBC 722, taken from > 42 nights of observation w…
Luminous X-Ray Sources in Arp 147
S. Rappaport, A. Levine, D. Pooley +1
The Chandra X-Ray Observatory was used to image the collisional ring galaxy Arp 147 for 42 ks. We detect 9 X-ray sources with luminosities in the range of 1.4 - 7 x 10^{39} ergs/se…