activity
20172026
most citedA hidden population of high-redshift double quasars unveiled by astrometry

55 citations · 240 across the 14 of their papers we have counts for

collaborators

15 papers

astro-ph.GA2026

SDSS-V: Revealing a weak accretion state in X-ray selected red quasars

Paloma Guetzoyan, James Aird, Amy L. Rankine +17

Red quasars (rQSOs) have been recognized as a short-lived, early stage in the evolutionary cycle of Active Galactic Nuclei (AGN), with fundamental differences in their intrinsic pr…

astro-ph.GA2026

Chandra X-ray Observations of Quasars with Velocity-Offset Broad Lines: Assessing the Binary Supermassive Black Hole Hypothesis

Peter Breiding, Michael Eracleous, Tamara Bogdanović +2

During the final stages of a galaxy merger, dynamical friction acting on the supermassive black holes (SMBHs) in the post-merger remnant can lead to the formation of a gravitationa…

astro-ph.GA2024

The SDSS-V Black Hole Mapper Reverberation Mapping Project: A Kinematically Variable Broad-Line Region and Consequences for Masses of Luminous Quasars

Logan B. Fries, Jonathan R. Trump, Keith Horne +27

We present a velocity-resolved reverberation mapping analysis of the hypervariable quasar RM160 (SDSS J141041.25+531849.0) at z = 0.359 with 153 spectroscopic epochs of data repres…

astro-ph.GA2023★ 1 cited

Varstrometry for Off-nucleus and Dual Sub-kpc AGN (VODKA): Very Long Baseline Array Searches for Dual or Off-nucleus Quasars and Small-scale Jets

Yu-Ching Chen, Xin Liu, Joseph Lazio +5

Dual and off-nucleus active supermassive black holes are expected to be common in the hierarchical structure formation paradigm, but their identification at parsec scales remains a…

astro-ph.HE2023★ 9 cited

Variability of extragalactic X-ray jets on kiloparsec scales

Eileen T. Meyer, Aamil Shaik, Yanbo Tang +10

Unexpectedly strong X-ray emission from extragalactic radio jets on kiloparsec scales has been one of the major discoveries of Chandra, the only X-ray observatory capable of sub-ar…

astro-ph.GA2023★ 17 cited

Powerful Radio-Loud Quasars are Triggered by Galaxy Mergers in the Cosmic Bright Ages

Peter Breiding, Marco Chiaberge, Erini Lambrides +14

While supermassive black holes are ubiquitous features of galactic nuclei, only a small minority are observed during episodes of luminous accretion. The physical mechanism(s) drivi…