Results 241 to 250 of about 163,876 (250)

Extended hot dust emission around the earliest massive quiescent galaxy

Ji Z, Williams C, Rieke G, Lyu J, Alberts S, Sun F, Helton J, Rieke M, Shivaei I, D'Eugenio F, Tacchella S, Robertson B, Zhu Y, Maiolino R, Bunker A, Sun Y, Willmer C.   +16 more
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Evidence for heavy-seed origin of early supermassive black holes from a z ≈ 10 X-ray quasar

Nature Astronomy, 2023
Observations of quasars reveal that many supermassive black holes (BHs) were in place less than 700 Myr after the Big Bang. However, the origin of the first BHs remains a mystery.
Á. Bogdán, A. Goulding, P. Natarajan, O. Kovács, G. Tremblay, U. Chadayammuri, M. Volonteri, R. Kraft, W. Forman, C. Jones, E. Churazov, I. Zhuravleva   +11 more
semanticscholar   +1 more source

Observational constraints on the feeding of supermassive black holes

Nature Astronomy, 2019
Supermassive black holes grow at the centre of galaxies in consonance with them. In this Review Article, we discuss the mass-feeding mechanisms that lead to this growth in active galactic nuclei (AGNs), focusing on constraints derived from observations ...
T. Storchi-Bergmann, A. Schnorr-Müller
semanticscholar   +1 more source

Supermassive Primordial Black Holes for Nano-Hertz Gravitational Waves and High-redshift JWST Galaxies

Research in Astronomy and Astrophysics
Recently, observational hints for supermassive black holes have been accumulating, prompting the question: Can primordial black holes (PBHs) be supermassive, particularly with masses M ≳ 109 M ⊙?
Hai-Long Huang, Yong Cai, Jun-Qian Jiang, Jun Zhang, Yun-Song Piao   +4 more
semanticscholar   +1 more source

A new class of flares from accreting supermassive black holes

Nature Astronomy, 2019
Accreting supermassive black holes (SMBHs) can exhibit variable emission across the electromagnetic spectrum and over a broad range of timescales. The variability of active galactic nuclei (AGNs) in the ultraviolet and optical is usually at the few tens ...
B. Trakhtenbrot, I. Arcavi, C. Ricci, S. Tacchella, D. Stern, H. Netzer, P. Jonker, A. Horesh, J. Mejía-restrepo, G. Hosseinzadeh, Valentina Hallefors, D. Howell, C. McCully, M. Baloković, M. Heida, N. Kamraj, G. Lansbury, Ł. Wyrzykowski, M. Gromadzki, A. Hamanowicz, S. Cenko, D. Sand, E. Hsiao, M. Phillips, T. Diamond, E. Kara, K. Gendreau, Z. Arzoumanian, R. Remillard   +28 more
semanticscholar   +1 more source

The effect of nuclear gas distribution on the mass determination of supermassive black holes

, 2017
Supermassive black holes reside in the nuclei of most galaxies. During their active episodes, black holes are powered by accretion discs where gravitational energy is converted into radiation1.
J. Mejía-restrepo, P. Lira, H. Netzer, B. Trakhtenbrot, D. Capellupo   +4 more
semanticscholar   +1 more source

Supermassive Black Holes

High-Energy Astrophysics, 2021
Andrew King, G. Andrewkin, Andrew King
semanticscholar   +1 more source

Inward Bound—The Search for Supermassive Black Holes in Galactic Nuclei

, 1995
J. Kormendy, D. Richstone
semanticscholar   +1 more source

Tidal Disruption of Stars by Supermassive Black Holes

, 2015
Nicholas C. Stone
semanticscholar   +1 more source