130 citations · 356 across the 7 of their papers we have counts for
7 papers
JWST lensed quasar dark matter survey I: Description and First Results
A. M. Nierenberg, R. E. Keeley, D. Sluse +18
The flux ratios of gravitationally lensed quasars provide a powerful probe of the nature of dark matter. Importantly, these ratios are sensitive to small-scale structure, irrespect…
The Nature of LoBAL QSOs: II. HST/WFC3 Observations Reveal Host Galaxies Dominated by Mergers
Mariana S. Lazarova, Gabriela Canalizo, Mark Lacy +4
Low-ionization Broad Absorption Line QSOs (LoBALs) are suspected to be merging systems in which extreme, AGN-driven outflows have been triggered. Whether or not LoBALs are uniquely…
Fading AGN Candidates: AGN Histories and Outflow Signatures
William C. Keel, Chris J. Lintott, W. Peter Maksym +12
We consider energy budgets and radiative history of 8 fading AGN, identified from mismatch between the ionizion of very extended (>10 kpc) ionized clouds and the luminosity of the…
The Close AGN Reference Survey (CARS) - Mrk 1018 returns to the shadows after 30 years as a Seyfert 1
R. E. McElroy, B. Husemann, S. M. Croom +10
We report the discovery that the known `changing look' AGN Mrk 1018 has changed spectral type for a second time. New VLT-MUSE data taken in 2015 as part of the Close AGN Reference…
About AGN ionization echoes, thermal echoes, and ionization deficits in low redshift Lyman-alpha blobs
Mischa Schirmer, Sangeeta Malhotra, Nancy A. Levenson +7
We report the discovery of 14 Lyman-alpha blobs (LABs) at z~0.3, existing at least 4-7 billion years later in the Universe than all other LABs known. Their optical diameters are 20…
HST Imaging of Fading AGN Candidates I: Host-Galaxy Properties and Origin of the Extended Gas
William C. Keel, W. Peter Maksym, Vardha N. Bennert +11
We present narrow- and medium-band HST imaging, with additional supporting ground-based data, for 8 galaxies identified as hosting fading AGN. These have AGN-ionized gas projected…