activity
20022026
most citedA possible close supermassive black-hole binary in a quasar with optical periodicity

367 citations · 4.1k across the 61 of their papers we have counts for

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27 papers · 1 filter

astro-ph.GA2026

The WISSH quasars project XIII. A multi-epoch study of ultra-fast broad absorption line outflows at cosmic noon

A. Deconto-Machado, G. Vietri, E. Piconcelli +22

Ultra-fast broad absorption line outflows (uBAL, ~0.1-0.2c) represent some of the most extreme manifestations of quasar-driven winds. We aim to investigate the variability of uBALs…

astro-ph.GA2026

Radio-Near Infrared Imaging of Dual Active Galactic Nuclei Candidates

Makoto A. Johnstone, Ilsang Yoon, Emmanuel Momjian +13

We report the results of a pilot study that searched for dual active galactic nuclei (AGN) in local (0.25) galaxies hosting double-peaked narrow emission lines in their optical…

astro-ph.GA2025★ 1 cited

The WISSH quasar project. XII. X-ray view of the most luminous quasi-stellar objects at Cosmic Noon

C. Degli Agosti, C. Vignali, E. Piconcelli +25

To improve our knowledge of nuclear emission in luminous QSOs at Cosmic Noon, we studied the X-ray emission of the WISE/SDSS-selected hyper-luminous (WISSH) QSO sample: 85 broad-li…

astro-ph.GA2024

Structural Decomposition of Merger-Free Galaxies Hosting Luminous AGNs

Matthew J. Fahey, Izzy. L. Garland, Brooke. D. Simmons +10

Active galactic nucleus (AGN) growth in disk-dominated, merger-free galaxies is poorly understood, largely due to the difficulty in disentangling the AGN emission from that of the…

astro-ph.GA2024★ 8 cited

Eddington Ratios of Dust-obscured Quasars at : Evidence Supporting Dust-obscured Quasars as Young Quasars

Dohyeong Kim, Yongjung Kim, Myungshin Im +4

Dust-obscured quasars have been suspected as the intermediate stage galaxies between merger-driven star-forming galaxies and unobscured quasars. This merger-driven galaxy evolution…

astro-ph.GA2024★ 11 cited

Accretion and Obscuration in Merger-Dominated Luminous Red Quasars

Eilat Glikman, Stephanie LaMassa, Enrico Piconcelli +2

We present an analysis of the X-ray properties 10 luminous, dust-reddened quasars from the FIRST-2MASS (F2M) survey based on new and archival Chandra observations. These systems ar…