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 2023Show all

10 papers · 1 filter

astro-ph.GA2023

FRAMEx. V. Radio Spectral Shape at Central Sub-parsec Region of AGNs

Onic I. Shuvo, Megan C. Johnson, Nathan J. Secrest +4

We present results from the Very Long Baseline Array (VLBA) multi-frequency (1.6, 4.4, 8.6, 22 GHz), high-sensitivity (~25 microJy beam^-1), sub-parsec scale (<1 pc) observations a…

astro-ph.GA2023

VLA FRAMEx. I. Wideband Radio Properties of the AGN in NGC 4388

Andrew J. Sargent, Travis C. Fischer, Megan C. Johnson +5

We present the first results from Karl G. Jansky Very Large Array (VLA) observations as a part of the Fundamental Reference Active Galactic Nucleus (AGN) Monitoring Experiment (FRA…

astro-ph.GA2023

FRAMEx IV: Mechanical Feedback from the Active Galactic Nucleus in NGC 3079

Luis C. Fernandez, Nathan J. Secrest, Megan C. Johnson +1

Using the Very Long Baseline Array, we observed the active galactic nucleus (AGN) in NGC 3079 over a span of six months to test for variability in the two main parsec-scale radio c…

astro-ph.GA2023

Exploring X-ray Properties of Low Metallicity Dwarf Galaxies

Jenna M. Cann, Kimberly A. Weaver, Ryan W. Pfeifle +3

One of the primary outstanding questions in extragalactic astronomy is the formation and early evolution of the supermassive black holes that are seen in nearly every massive galax…

astro-ph.IM2023★ 1 cited

JASMINE: Near-Infrared Astrometry and Time Series Photometry Science

Daisuke Kawata, Hajime Kawahara, Naoteru Gouda +86

Japan Astrometry Satellite Mission for INfrared Exploration (JASMINE) is a planned M-class science space mission by the Institute of Space and Astronautical Science, the Japan Aero…

astro-ph.GA2023

NuSTAR Observations of Four Mid-IR Selected Dual AGN Candidates in Galaxy Mergers

Ryan W. Pfeifle, Kimberly Weaver, Shobita Satyapal +5

Mergers of galaxies are a ubiquitous phenomenon in the Universe and represent a natural consequence of the ``bottom-up'' mass accumulation and galaxy evolution cosmological paradig…