Results 21 to 30 of about 2,711,397 (376)

Dirty Black Holes and Hairy Black Holes [PDF]

open access: yesPhysical Review Letters, 1996
An approach based on considerations of the non-classical energy momentum tensor outside the event horizon of a black hole provides additional physical insight into the nature of discrete quantum hair on black holes and its effect on black hole temperature. Our analysis both extends previous work based on the Euclidean action techniques, and corrects an
Hong Liu   +2 more
openaire   +5 more sources

Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies [PDF]

open access: yes, 2013
Supermassive black holes (BHs) have been found in 85 galaxies by dynamical modeling of spatially resolved kinematics. The Hubble Space Telescope revolutionized BH research by advancing the subject from its proof-of-concept phase into quantitative studies
J. Kormendy, L. Ho
semanticscholar   +1 more source

Spin-Induced Scalarized Black Holes. [PDF]

open access: yesPhysical Review Letters, 2020
It was recently shown that a scalar field suitably coupled to the Gauss-Bonnet invariant G can undergo a spin-induced linear tachyonic instability near a Kerr black hole.
C. Herdeiro   +4 more
semanticscholar   +1 more source

Islands in Schwarzschild black holes [PDF]

open access: yes, 2020
We study the Page curve for asymptotically flat eternal Schwarzschild black holes in four and higher spacetime dimensions. Before the Page time, the entanglement entropy grows linearly in time.
K. Hashimoto, Norihiro Iizuka, Y. Matsuo
semanticscholar   +1 more source

Gravitational deflection of light and shadow cast by rotating Kalb-Ramond black holes [PDF]

open access: yesPhysical Review D, 2020
The nonminimal coupling of the nonzero vacuum expectation value of the self-interacting antisymmetric Kalb-Ramond field with gravity leads to a power-law hairy black hole having a parameter s, which encompasses the Reissner-Nordstrom black hole (s=1). We
Rahul Kumar   +2 more
semanticscholar   +1 more source

QUANTIZATION OF BLACK HOLES [PDF]

open access: yesModern Physics Letters A, 1998
We show that black holes can be quantized in an intuitive and elegant way with results in agreement with conventional knowledge of black holes by using Bohr's idea of quantizing the motion of an electron inside the atom in quantum mechanics. We find that properties of black holes can also be derived from an ansatz of quantized entropy [Formula: see ...
Xiao-Gang He, Bo-Qiang Ma, Bo-Qiang Ma
openaire   +7 more sources

First Detection of an Overmassive Black Hole Galaxy UHZ1: Evidence for Heavy Black Hole Seed Formation from Direct Collapse

open access: yesThe Astrophysical Journal Letters, 2023
The recent Chandra-JWST discovery of a quasar in the z ≈ 10.1 galaxy UHZ1 reveals that accreting supermassive black holes were already in place 470 million years after the Big Bang. The Chandra X-ray source detected in UHZ1 is a Compton-thick quasar with
Priyamvada Natarajan   +5 more
doaj   +1 more source

Black hole excision for dynamic black holes [PDF]

open access: yesPhysical Review D, 2001
5 pages, 7 figures, published version with changes to equation (2)
Denis Pollney   +5 more
openaire   +3 more sources

A Fundamental Relation between Supermassive Black Holes and Their Host Galaxies [PDF]

open access: yes, 2000
The masses of supermassive black holes correlate almost perfectly with the velocity dispersions of their host bulges, Mbh ∝ σα, where α = 4.8 ± 0.5. The relation is much tighter than the relation between Mbh and bulge luminosity, with a scatter no larger
L. Ferrarese, D. Merritt
semanticscholar   +1 more source

Moulting Black Holes [PDF]

open access: yesJournal of High Energy Physics, 2012
Abstract We find a family of novel supersymmetric phases of the D1-D5 CFT, which in certain ranges of charges have more entropy than all known ensembles. We also find bulk BPS configurations that exist in the same range of parameters as these phases, and have more entropy than a BMPV black hole; they can be thought of as coming ...
Bena, I.   +4 more
openaire   +5 more sources

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