Results 291 to 300 of about 264,395 (306)

Multi-messenger gravitational lensing. [PDF]

Philos Trans A Math Phys Eng Sci
Smith GP, Baker T, Birrer S, Collins CE, Ezquiaga JM, Goyal S, Hannuksela OA, Hemanta P, Hendry MA, Janquart J, Keitel D, Levan AJ, Lo RKL, More A, Nicholl M, Pastor-Marazuela I, Ponte Pérez AI, Ubach H, Uronen LE, Wright M, Zumalacarregui M, Bianco F, Çalişkan M, Chan JCL, Colangeli E, Gompertz BP, Haines CP, Hayes EE, Hu B, Lamb GP, Liu A, Mandhai S, Narola H, Nguyen QL, Poon JSC, Ryczanowski D, Seo E, Shajib AJ, Shan X, Tanvir N, Vujeva L.   +40 more
europepmc   +1 more source

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
europepmc   +1 more source

Gravitational waves from dark domain walls

Christiansen Ø, Adamek J, Hassani F, Mota DF.   +3 more
europepmc   +1 more source

Extreme energy in a relaxed galaxy group indicates the bursty nature of AGN feedback

Eckert D, Gastaldello F, Lovisari L, McGee S, Pasini T, Brienza M, Kolokythas K, O'Sullivan E, Simionescu A, Sun M, Bourne M, Chen Y, Cui W, Ettori S, Finoguenov A, Gozaliasl G, Kale R, Mernier F, Oppenheimer B, Schellenberger G, Seppi R, Tempel E.   +21 more
europepmc   +1 more source

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Supermassive Black Holes

High-Energy Astrophysics, 2021
Andrew King, G. Andrewkin, Andrew King
semanticscholar   +4 more sources

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

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

, 1995
Dynamical searches reveal central dark objects with masses"" 106 to 109.5 M0 in the Galaxy, M31, M32, M87, NGC 3115, NGC 3377, NGC 4258, and NGC 4594. Indirect arguments suggest but do not prove that these are supermassive black holes (BHs) like those ...
J. Kormendy, D. Richstone
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