activity
20122026
most citedA Test of the Cosmological Principle with Quasars

275 citations · 1.7k across the 61 of their papers we have counts for

collaborators
Showing 2022Show all

15 papers · 1 filter

astro-ph.GA2022★ 2 cited

NuSTAR Observes Two Bulgeless Galaxies: No Hard X-ray AGN Detected in NGC 4178 or J0851+3926

Ryan W. Pfeifle, Shobita Satyapal, Claudio Ricci +5

The discovery over the last several decades of moderate luminosity AGNs in disk-dominated galaxies - which show no "classical" bulges - suggests that secular mechanisms represent a…

astro-ph.GA2022★ 15 cited

CLASS Survey Description: Coronal Line Needles in the SDSS Haystack

Michael Reefe, Remington O. Sexton, Sara M. Doan +3

Coronal lines are a powerful, yet poorly understood, tool to identify and characterize Active Galactic Nuclei (AGNs). There have been few large scale surveys of coronal lines in th…

astro-ph.GA2022★ 21 cited

A Highly Magnified Gravitationally Lensed Red QSO at z = 2.5 with a Significant Flux Ratio Anomaly

Eilat Glikman, Cristian E. Rusu, Geoff C. -F. Chen +12

We present the discovery of a gravitationally lensed dust-reddened QSO at z = 2.517, identified in a survey for QSOs by infrared selection. Hubble Space Telescope imaging reveals a…

astro-ph.GA2022★ 15 cited

Nuclear Activity in the Low Metallicity Dwarf Galaxy SDSS J0944-0038: A Glimpse into the Primordial Universe

Michael Reefe, Shobita Satyapal, Remington O. Sexton +11

Local low metallicity dwarf galaxies are relics of the early universe and hold clues into the origins of supermassive black holes (SMBHs). In recent work, coronal lines have been u…

astro-ph.GA2022★ 9 cited

A catalog of candidate double and lensed quasars from Gaia and WISE data

Valeri V. Makarov, Nathan J. Secrest

Making use of strong correlations between closely separated multiple or double sources and photometric and astrometric metadata in Gaia EDR3, we generate a catalog of candidate dou…

astro-ph.GA2022★ 14 cited

Optical-Radio Position Offsets are Inversely Correlated with AGN Photometric Variability

Nathan Secrest

Using photometric variability information from the new Gaia DR3 release, I show for the first time that photometric variability is inversely correlated with the prevalence of optic…