Results 61 to 70 of about 2,711,397 (376)
Primordial Black Holes as a Dark Matter Candidate Are Severely Constrained by the Galactic Center 511 keV γ-Ray Line. [PDF]
Physical Review Letters, 2019 We derive the strongest constraint on the fraction of dark matter that can be composed of low mass primordial black holes by using the observation of the Galactic Center 511 keV γ-ray line.
Ranjan Laha
semanticscholar +1 more source
Microscopic origin of the Bekenstein-Hawking entropy of supersymmetric AdS5 black holes [PDF]
Journal of High Energy Physics, 2018 We present a holographic derivation of the entropy of supersymmetric asymptotically AdS5 black holes. We define a BPS limit of black hole thermodynamics by first focussing on a supersymmetric family of complexified solutions and then reaching extremality.
A. Cabo-Bizet +3 more
semanticscholar +1 more source
Black holes and random matrices [PDF]
, 2016 A bstractWe argue that the late time behavior of horizon fluctuations in large anti-de Sitter (AdS) black holes is governed by the random matrix dynamics characteristic of quantum chaotic systems. Our main tool is the Sachdev-Ye-Kitaev (SYK) model, which
Jordan S. Cotler +8 more
semanticscholar +1 more source
Observing black holes spin [PDF]
Nature Astronomy, 2019 The spin of a black hole retains the memory of how the black hole grew, and can be a potent source of energy for powering relativistic jets. To understand the diagnostic power and astrophysical significance of black hole spin, however, we must first ...
C. Reynolds
semanticscholar +1 more source
, 1991 A renormalizable theory of quantum gravity coupled to a dilaton and conformal matter in two space-time dimensions is analyzed. The theory is shown to be exactly solvable classically.
A. H. Chamseddine +15 more
core +1 more source
Journal of High Energy Physics, 2018 We present novel asymptotically global AdS4 solutions, constructed by turning on a dipolar differential rotation at the conformal boundary. At fixed energy and boundary profile, we find two different geometries: a horizonless spacetime, and a deformed, hourglass shaped black hole with zero net angular momentum.
Markeviciute, Julija, Santos, Jorge E
openaire +5 more sources
Thermodynamics of the Schwarzschild and the Reissner–Nordström black holes with quintessence
Nuclear Physics B, 2016 In this paper, we study the thermodynamics of the Schwarzschild and the Reissner–Nordström black holes surrounded by quintessence. By using the thermodynamical laws of the black holes, we derive the thermodynamic properties of these black holes and we ...
K. Ghaderi, B. Malakolkalami
doaj +1 more source
The many lives of active galactic nuclei: cooling flows, black holes and the luminosities and colour [PDF]
, 2005 We simulate the growth of galaxies and their central supermassive black holes by implementing a suite of semi-analytic models on the output of the Millennium Run, a very large simulation of the concordance A cold dark matter cosmogony.
D. Croton +9 more
semanticscholar +1 more source
Soft Hair on Black Holes. [PDF]
Physical Review Letters, 2016 It has recently been shown that Bondi-van der Burg-Metzner-Sachs supertranslation symmetries imply an infinite number of conservation laws for all gravitational theories in asymptotically Minkowskian spacetimes.
S. Hawking, M. Perry, A. Strominger
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