Results 101 to 110 of about 7,819 (229)
Dark-matter haloes and the M-sigma relation for supermassive black holes [PDF]
, 2016 We develop models of two-component spherical galaxies to establish scaling relations linking the properties of spheroids at z = 0 (total stellar masses, effective radii Re and velocity dispersions within Re) to the properties of their dark-matter haloes ...
core +1 more source
Supermassive gravitinos and giant primordial black holes [PDF]
, 2020 We argue that the stable (color singlet) supermassive gravitinos proposed in our previous work can serve as seeds for giant primordial black holes. These seeds are hypothesized to start out as tightly bound states of fractionally charged gravitinos in ...
Nicolai, Hermann +3 more
core +2 more sources
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
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
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Dance of Two Supermassive Binary Black Holes [PDF]
, 2018 Black holes exist in a various range of masses ranging from stellar mass (~ 10 Solar Mass) to Supermassive black holes (SMBHs, million to billion Solar Mass).
Bansal, Karishma
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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
Supermassive Black Holes and the Evolution of Galaxies
, 1998 20 pages, - This is a near-duplicate of the paper in Nature 395, A14, 1998 (Oct 1)
Richstone, D +13 more
openaire +3 more sources
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
core
Galactic Collisions: The Growth and Merger of Supermassive Black Holes [PDF]
, 2017 The discovery of gravitational waves from two merging black holes at cosmological distance motivates the study of the galactic environments hosting coalescing black holes.
U, Vivian (5389774), U, Vivian
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Fast growth of supermassive black holes in galaxies [PDF]
, 2005 We report on a calculation of the growth of the mass of supermassive black holes at galactic centers from dark matter and Eddington – limited baryonic accretion.
Biermann, P. L. +3 more
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