7 papers
An Extra-nuclear Water Maser in NGC 1106 Likely Driven By An AGN Shock: Implications for Maser-based Black Hole Mass Measurements
Macon Magno, Emmanuel Momjian, Krista L. Smith +4
We present Very Large Array A-configuration ('') 22 GHz spectral-line and continuum observations of the Swift-BAT detected Seyfert 2 galaxy, NGC 1106, aimed at localizing a w…
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…
JWST NIRCam Imaging of NGC 4258: I. Observation Overview
Travis C. Fischer, Nicholas F. Cothard, Omnarayani Nayak +3
We present James Webb Space Telescope (JWST) NIRCam imaging of the nearby Seyfert 1.9 galaxy NGC 4258, which hosts strong star formation regions as well as an anomalous jet-like ra…
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…
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…
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…
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…