569 citations · 2.1k across the 27 of their papers we have counts for
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Radio Monitoring of the Changing-look AGN Mrk 590 I: VLA Observations Reveal A Bow-shock Driven Radio Brightening Event
Gregory Walsh, Marianne Vestergaard, Daniel Lawther +2
Mrk 590 is a changing-look AGN (CLAGN) that slowly faded from a Seyfert Type 1 to near quiescence over a few decades before re-igniting in 2017. Monitoring in the optical/UV/X-ray…
The unusually red delay spectrum of the low-mass black hole AGN NGC\,4051 as revealed by intensive continuum reverberation mapping with the Las Cumbres Observatory
Marcin Marculewicz, Juan V. Hernández Santisteban, Keith Horne +12
We present a two-year optical reverberation mapping campaign of NGC 4051, an active galactic nucleus (AGN) hosting a low-mass black hole (), using daily observ…
A break in the X-ray loudness of Markarian 590: evidence for an AGN spectral state transition?
B. Palit, A. Rozanska, A. G. Markowitz +8
Using decade-long multi-band {\it Swift} observations of the changing-look AGN Markarian 590, we identify a clear break in the dependence of the X-ray loudness parameter $α_{\rm ox…
The First Swift Intensive AGN Accretion Disk Reverberation Mapping Survey
R. Edelson, J. Gelbord, E. Cackett +32
Swift intensive accretion disk reverberation mapping of four AGN yielded light curves sampled 200-350 times in 0.3-10 keV X-ray and six UV/optical bands. Uniform reduction an…
Swift monitoring of NGC 4151: Evidence for a Second X-ray/UV Reprocessing
R. Edelson, J. Gelbord, E. Cackett +41
Swift monitoring of NGC 4151 with ~6 hr sampling over a total of 69 days in early 2016 is used to construct light curves covering five bands in the X-rays (0.3-50 keV) and six in t…