activity
20172026
most cited1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months

193 citations · 4.4k across the 184 of their papers we have counts for

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Showing astro-ph.GAShow all

6 papers · 1 filter

astro-ph.GA2026

Overmassive No More: The Case for Little Red Dots Hosting Black Hole Seeds as Massive as Single Supermassive Stars

Wendy Q. Sun, Rohan P. Naidu, Hanpu Liu +17

Little Red Dots (LRDs) display singular properties unlike any known class of AGN or galaxies, motivating novel mass estimators for their central engines. Inspired by their similari…

astro-ph.GA2022★ 50 cited

The Host Galaxy and Rapidly Evolving Broad-line Region in the Changing-look Active Galactic Nucleus 1ES 1927+654

Ruancun Li, Luis C. Ho, Claudio Ricci +4

Changing-look active galactic nuclei (AGNs) present an important laboratory to understand the origin and physical properties of the broad-line region (BLR). We investigate follow-u…

astro-ph.GA2020★ 77 cited

The Tidal Disruption Event AT 2018hyz I: Double-peaked emission lines and a flat Balmer decrement

P. Short, M. Nicholl, A. Lawrence +28

We present results from spectroscopic observations of AT 2018hyz, a transient discovered by the ASAS-SN survey at an absolute magnitude of mag, in the nucleus of a…

astro-ph.GA2019★ 193 cited

1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months

Benny Trakhtenbrot, Iair Arcavi, Chelsea L. MacLeod +21

We study the sudden optical and ultraviolet (UV) brightening of 1ES 1927+654, which until now was known as a narrow-line active galactic nucleus (AGN). 1ES 1927+654 was part of the…

astro-ph.GA2019★ 23 cited

Nebular H Limits for Fast Declining Type Ia Supernovae

D. J. Sand, R. C. Amaro, M. Moe +16

One clear observational prediction of the single degenerate progenitor scenario as the origin of type Ia supernovae (SNe) is the presence of relatively narrow (1000 km s$^…

astro-ph.GA2018★ 58 cited

Nebular Spectroscopy of the `Blue Bump' Type Ia Supernova 2017cbv

D. J. Sand, M. L. Graham, J. Botyánszki +17

We present nebular phase optical and near-infrared spectroscopy of the Type Ia supernova (SN) 2017cbv. The early light curves of SN~2017cbv showed a prominent blue bump in the ,…