Results 151 to 160 of about 234,699 (281)
Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos. [PDF]
Nat Commun, 2021 Kimura SS, Murase K, Mészáros P.
europepmc +1 more source
Observational implications of cosmologically coupled black holes
The Open Journal of Astrophysics, 2023 It was recently suggested that "cosmologically coupled" black holes with masses that increase in proportion to the volume of the Universe might constitute the physical basis of dark energy.
Sohan Ghodla +3 more
doaj +1 more source
High-energy signatures of binary supermassive black holes
EPJ Web of Conferences, 2013 Some active galactic nuclei are supposed to harbor binary systems of supermassive black holes. They are an attractive target for gravitational wave experiments.
Vila Gabriela S. +2 more
doaj +1 more source
Supermassive black holes in spiral galaxies [PDF]
Proceedings of the International Astronomical Union, 2004 6 pages, 5 figures, to be published in "The Interplay among Black Holes, Stars and ISM in Galactic Nuclei," Th. Storchi Bergmann, L.C. Ho & H.R.
openaire +3 more sources
Supermassive Black Hole Accretion and Growth [PDF]
arXiv, 2020 The formation, accretion and growth of supermassive black holes in the early universe are investigated. The accretion rate ${\dot M}$ is calculated using the Bondi accretion rate onto black holes. Starting with initial seed black holes with masses $M_{\rm BH}\sim 10^2-10^3M_{\odot}$, the Bondi accretion rate can evolve into a supermassive black hole ...
arxiv
The first robust evidence showing a dark matter density spike around the supermassive black hole in OJ 287 [PDF]
ApJL 962, L40 (2024)Black hole dynamics suggests that dark matter would re-distribute near a supermassive black hole to form a density spike. However, no direct evidence of dark matter density spike around a supermassive black hole has been identified. In this letter, we present the first robust evidence showing a dark matter density spike around a supermassive black hole.
arxiv
Comment on the Origin of the Supermassive Black Hole [PDF]
Tezukayama Academic Review, Vol.11, p.49 - p.52, 2004, 2005 We give the comment why the supermassive black hole exists at the center of almost all galaxies. We consider the origin of the supermassive black hole from the point of view of the density of the matter. If the density of the matter is fixed and such matter can come together by the gravitational attraction, such stellar object eventually becomes the ...
arxiv
Cosmology, primordial black holes, and supermassive particles [PDF]
, 1985 A. G. Polnarev, Maxim Yu. Khlopov
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Observational Evidence for Supermassive Black Holes [PDF]
, 1989 Alan Dressler
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Dynamics Around Supermassive Black Holes: Extreme-mass-ratio Inspirals as Gravitational-wave Sources
The Astrophysical JournalSupermassive black holes and their surrounding dense stellar environments nourish a variety of astrophysical phenomena. We focus on the distribution of stellar-mass black holes around the supermassive black hole and the consequent formation of extreme ...
Barak Rom +3 more
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