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

63 papers

astro-ph.GA2026

A New Sample of Closely Separated Dual and Binary AGN Candidates Revealed with the Radio Fundamental Catalog

Emma Schwartzman, Ryan Pfeifle, Tracy Clarke +3

The Big Multi-AGN Catalog (BigMAC) provides the first literature-complete compilation of confirmed and candidate dual, binary, and recoiling active galactic nuclei (AGN). The BigMA…

astro-ph.GA2026

The Hunt for Red Dual AGNs I: Spatially-Resolved Mid-IR Dual AGNs in the DeCam Legacy Survey

Ryan W. Pfeifle, Kimberly A. Weaver, Barry Rothberg +13

Theoretical studies predict that dual AGNs are a critical stage of galaxy merger-driven supermassive black hole growth. Systematic searches for dual AGNs typically target late-stag…

astro-ph.CO2025★ 5 cited

Clustering properties of the CatWISE2020 quasar catalogue and their impact on the cosmic dipole anomaly

Sebastian von Hausegger, Nathan Secrest, Harry Desmond +3

The cosmic dipole anomaly -- the observation of a significant mismatch between the dipole observed in the matter distribution and that expected given the kinematic interpretation o…

astro-ph.GA2025

VLA FRAMEx. III. Circumnuclear Radio Emission Mechanisms in Hard X-ray Selected Active Galactic Nuclei

Andrew J. Sargent, Alexander J. van der Horst, Megan C. Johnson +5

We present Stokes I continuum analysis for a volume-limited sample () of hard X-ray selected active galactic nuclei (AGNs) using GHz observations with the Karl…

astro-ph.GA2025

A High Resolution Search for Dual AGN Candidates in Mergers: A Pre-Selection Strategy using Keck AO

Camilo Vazquez, S. Satyapal, G. Canalizo +20

Accreting supermassive black holes (SMBHs) in galaxy mergers with separations 1 kpc are crucial to our understanding of SMBH growth, galaxy evolution, and SMBH binary evolution…

astro-ph.GA2025

VLA FRAMEx. II. Radio Spectra of Nearby Active Galactic Nuclei at Subarcsecond Resolution

Andrew J. Sargent, Alexander J. van der Horst, Megan C. Johnson +5

We present GHz in-band spectral energy distributions with accompanying 6 GHz and 10 GHz imaging results for a volume-complete sample ( Mpc) of hard X-ray selected activ…