activity
20122026
most citedSupermassive black holes with high accretion rates in active galactic nuclei: I. First results from a new reverberation mapping campaign

238 citations · 3.8k across the 97 of their papers we have counts for

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Showing 2023Show all

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astro-ph.GA2023

Star Formation in Self-gravitating Disks in Active Galactic Nuclei. III. Efficient Production of Iron and Infrared Spectral Energy Distributions

J. -M. Wang, S., Zhai +7

Strong iron lines are a common feature of the optical spectra of active galactic nuclei (AGNs) and quasars from to the local Universe, and [Fe/Mg] ratios do not show co…

astro-ph.HE2023★ 44 cited

Observations of a black hole X-ray binary indicate formation of a magnetically arrested disk

Bei You, Xinwu Cao, Zhen Yan +8

Accretion of material onto a black hole drags any magnetic fields present inwards, increasing their strength. Theory predicts that sufficiently strong magnetic fields can halt the…

astro-ph.HE2023

AGN STORM 2. VI. Mapping Temperature Fluctuations in the Accretion Disk of Mrk 817

Jack M. M. Neustadt, Christopher S. Kochanek, John Montano +49

We fit the UV/optical lightcurves of the Seyfert 1 galaxy Mrk 817 to produce maps of the accretion disk temperature fluctuations resolved in time and radius. The maps are…

astro-ph.GA2023

Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XIII. Ultraviolet Time Lag of H Emission in Mrk 142

V. C. Khatu, S. C. Gallagher, K. Horne +17

We performed a rigorous reverberation-mapping analysis of the broad-line region (BLR) in a highly accreting () active galactic nucleus, Markarian 142 (…

astro-ph.HE2023

Long-term multiwavelength monitoring and reverberation mapping of NGC 2617 during a changing-look event

V. L. Oknyansky, M. S. Brotherton, S. S. Tsygankov +32

We present the results of photometric and spectroscopic monitoring campaigns of the changing look AGN NGC~2617 carried out from 2016 until 2022 and covering the wavelength range fr…

astro-ph.GA2023

AGN STORM 2: V. Anomalous Behavior of the CIV Light Curve in Mrk 817

Y. Homayouni, Gerard A. Kriss, Gisella De Rosa +49

An intensive reverberation mapping campaign on the Seyfert 1 galaxy Mrk817 using the Cosmic Origins Spectrograph (COS) on the Hubble Space Telescope (HST) revealed significant vari…