Quasars and the intergalactic medium at cosmic dawn

X Fan, E Bañados, RA Simcoe - Annual Review of Astronomy …, 2023 - annualreviews.org
Quasars at cosmic dawn provide powerful probes of the formation and growth of the earliest
supermassive black holes (SMBHs) in the Universe, their connections to galaxy and …

Obscured active galactic nuclei

RC Hickox, DM Alexander - Annual Review of Astronomy and …, 2018 - annualreviews.org
Active galactic nuclei (AGN) are powered by the accretion of material onto a supermassive
black hole (SMBH) and are among the most luminous objects in the Universe. However, the …

A CEERS discovery of an accreting supermassive black hole 570 Myr after the Big Bang: identifying a progenitor of massive z> 6 quasars

RL Larson, SL Finkelstein, DD Kocevski… - The Astrophysical …, 2023 - iopscience.iop.org
We report the discovery of an accreting supermassive black hole at z= 8.679. This galaxy,
denoted here as CEERS_1019, was previously discovered as a Lyα-break galaxy by …

A JWST/NIRSpec First Census of Broad-line AGNs at z= 4–7: Detection of 10 Faint AGNs with M BH∼ 106–108 M⊙ and Their Host Galaxy Properties

Y Harikane, Y Zhang, K Nakajima… - The Astrophysical …, 2023 - iopscience.iop.org
We present the first statistical sample of faint type 1 AGNs at z> 4 identified by
JWST/NIRSpec deep spectroscopy. Among the 185 galaxies at z spec= 3.8–8.9 confirmed …

Hidden little monsters: spectroscopic identification of low-mass, broad-line AGNs at z> 5 with CEERS

DD Kocevski, M Onoue, K Inayoshi… - The Astrophysical …, 2023 - iopscience.iop.org
We report on the discovery of two low-luminosity, broad-line active galactic nuclei (AGNs) at
z> 5 identified using JWST NIRSpec spectroscopy from the Cosmic Evolution Early Release …

A small and vigorous black hole in the early Universe

R Maiolino, J Scholtz, J Witstok, S Carniani… - Nature, 2024 - nature.com
Several theories have been proposed to describe the formation of black hole seeds in the
early Universe and to explain the emergence of very massive black holes observed in the …

UNCOVER: A NIRSpec Identification of a Broad-line AGN at z= 8.50

V Kokorev, S Fujimoto, I Labbe… - The Astrophysical …, 2023 - iopscience.iop.org
Deep observations with the James Webb Space Telescope (JWST) have revealed an
emerging population of red pointlike sources that could provide a link between the …

JWST UNCOVER: extremely Red and Compact Object at z phot≃ 7.6 triply imaged by A2744

LJ Furtak, A Zitrin, A Plat, S Fujimoto… - The Astrophysical …, 2023 - iopscience.iop.org
Recent JWST/NIRCam imaging taken for the ultra-deep UNCOVER program reveals a very
red dropout object at z phot≃ 7.6, triply imaged by the galaxy cluster A2744 (zd= 0.308). All …

Probing early supermassive black hole growth and quasar evolution with near-infrared spectroscopy of 37 reionization-era quasars at 6.3< z≤ 7.64

J Yang, F Wang, X Fan, AJ Barth… - The Astrophysical …, 2021 - iopscience.iop.org
We report the results of near-infrared spectroscopic observations of 37 quasars in the
redshift range 6.3< z≤ 7.64, including 32 quasars at z> 6.5, forming the largest quasar near …

The Sloan Digital Sky Survey Quasar Catalog: Sixteenth Data Release

BW Lyke, AN Higley, JN McLane… - The Astrophysical …, 2020 - iopscience.iop.org
We present the final Sloan Digital Sky Survey IV (SDSS-IV) quasar catalog from Data
Release 16 of the extended Baryon Oscillation Spectroscopic Survey (eBOSS). This catalog …