2 papers
astro-ph.HE2020
Accretion History of AGN III: Radiative Efficiency and AGN Contribution to Reionization
Tonima Tasnim Ananna, C. Megan Urry, Ezequiel Treister +6
The cosmic history of supermassive black hole (SMBH) growth is important for understanding galaxy evolution, reionization and the physics of accretion. Recent NuSTAR, Swift-BAT and…
astro-ph.GA2020
Dying of the Light: An X-ray Fading Cold Quasar at z ~ 0.405
Kevin C. Cooke, Allison Kirkpatrick, Michael Estrada +11
Cold quasars are a rare subpopulation observed to host unobscured, X-ray luminous active galactic nuclei (AGN) while also retaining a cold gas supply fueling high star formation ra…