Results 91 to 100 of about 2,382,221 (211)
Primordial Origins of Supermassive Black Holes [PDF]
, 2019 At the center of the Milky Way sits a supermassive black hole named Sagittarius A*1, which is over a million times the mass of our sun. Other galaxy centers host similar black holes which are up to thousands of times larger than even Sagittarius A*. Some
Black, William, Neilson, David
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Memorie della Vicinity of supermassive black holes
, 2020 . Black holes are gravitationally very simple objects, they just come with two free parameters, the mass and the spin. Mass is only relevant for scaling of lengths and times.
M Camenzind
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Supermassive black holes at high redshifts [PDF]
, 2019 MeV blazars are the most luminous sources in the Universe and host supermassive black holes. An MeV survey will detect >1000 of them up to z > 5. This would allow us: to probe the formation and growth of massive black holes at high z; to pinpoint the ...
Castro, Daniel +33 more
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Gravitational Waves from Supermassive Black Holes
, 2016 In this talk, I will present the first direct detections of gravitational waves from binary stellar-mass black hole mergers during the first observing run of the two detectors of the Advanced Laser Interferometer Gravitational-wave Observatory, which ...
di Girolamo, Tristano +1 more
core +2 more sources
The Astrophysical JournalMany stellar-mass black holes (sBHs) are expected to orbit supermassive black holes at galactic centers. For galaxies with active galactic nuclei, it is likely that the sBHs reside in a disk.
Barak Rom, Re’em Sari, Dong Lai
doaj +1 more source
GalaxiesWe propose that modifications to the Higgs potential within a narrow atmospheric layer near the event horizon of an astrophysical black hole could significantly enhance the rate of sphaleron transitions, as well as transform the Chern–Simons number into ...
Merab Gogberashvili +1 more
doaj +1 more source
Book Review: The Edge of Infinity: Supermassive Black Holes in the Universe [PDF]
, 2004 This document is Dr. Oswalt’s review of The Edge of Infinity : Supermassive Black Holes in the Universe by Fulvio Melia.
Oswalt, T. D.
core +1 more source
Two Radio Cores in GPS J1543-0757: A New Dual Supermassive Black Hole System?
The Astrophysical JournalWe report on the discovery of a dual supermassive black hole system in the radio galaxy J1543−0757, with a projected separation between the two black holes of ∼46 mas. The result is based on recent multifrequency observations using the Very Long Baseline
Xiaopeng Cheng, Bong Won Sohn
doaj +1 more source
Black holes at accelerators [PDF]
, 2006 In theories with large extra dimensions and TeV-scale gravity, black holes are copiously produced in particle collisions at energies well above the Planck scale.
Webber, Bryan
core +5 more sources
Supermassive black holes with stellar companions
AIP Conference Proceedings, 1994 Low‐mass stars in close orbits around supermassive black holes in active galactic nuclei (AGN) may provide an important signature for testing the existence of supermassive black holes. Here we discuss how such systems can form by being ‘‘ground down’’ by their interaction with an AGN accretion disk and discuss the peculiarities of such binaries with ...
Podsiadlowski, P, Rees, M
openaire +2 more sources