Results 61 to 70 of about 2,819,674 (325)

BLACK HOLE UNCERTAINTIES [PDF]

open access: yesModern Physics Letters A, 1993
In this work the quantum theory of two-dimensional dilaton black holes is studied using the Wheeler-De Witt equation. The solutions correspond to wave functions of the black hole. It is found that for an observer inside the horizon, there are uncertainty relations for the black hole mass and a parameter in the metric determining the Hawking flux. Only
openaire   +3 more sources

Effects of (un)usual asymptotics on shadows and lensing of rotating black holes: Numerical and perturbative treatments

open access: yesPhysics Letters B
We consider the slowly rotating black hole with non-flat, non-(A)dS asymptotics and the rotating black holes with AdS asymptotics in the Einstein-Maxwell-dilaton (EMD) theory, and compare the shadows for such black holes with the Kerr-Newman-AdS black ...
Yong-Zhuang Li, Xiao-Mei Kuang
doaj   +1 more source

Primordial Black Holes as a Dark Matter Candidate Are Severely Constrained by the Galactic Center 511 keV γ-Ray Line. [PDF]

open access: yesPhysical 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

Thermodynamics of third order Lovelock anti-de Sitter black holes revisited

open access: yes, 2010
We compute the mass and the temperature of third order Lovelock black holes with negative Gauss-Bonnet coefficient ...
D. Birmingham   +7 more
core   +1 more source

Cosmic conundra explained by thermal history and primordial black holes [PDF]

open access: yesPhysics of the Dark Universe, 2019
A universal mechanism may be responsible for several unresolved cosmic conundra. The sudden drop in the pressure of relativistic matter at $W^{\pm} / Z^{0}$ decoupling, the quark-hadron transition and $e^{+}e^{-}$ annihilation enhances the probability of
B. Carr   +3 more
semanticscholar   +1 more source

Information radiation in BCFT models of black holes [PDF]

open access: yesJournal of High Energy Physics, 2019
In this note, following [1–3], we introduce and study various holographic systems which can describe evaporating black holes. The systems we consider are boundary conformal field theories for which the number of local degrees of freedom on the boundary ...
M. Rozali   +4 more
semanticscholar   +1 more source

Macroscopic Black Holes, Microscopic Black Holes and Noncommutative Membrane

open access: yes, 2003
We study the stretched membrane of a black hole as consisting of a perfect fluid. We find that the pressure of this fluid is negative and the specific heat is negative too.
Hawking S   +5 more
core   +5 more sources

Universal thermodynamic topological classes of rotating black holes

open access: yesPhysics Letters B
In a recent study, Wei et al. (2024) [96] proposed a universal classification scheme that interprets black hole solutions, including the four-dimensional Schwarzschild, Reissner-Nordström (RN), Schwarzschild-AdS, and RN-AdS black hole solutions, as ...
Xiao-Dan Zhu, Wentao Liu, Di Wu
doaj   +1 more source

Observing black holes spin [PDF]

open access: yesNature 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

Black hole critical phenomena without black holes [PDF]

open access: yesPramana, 2000
13 pages, 6 figures; Submission for the proceedings of ICGC 2000 in the journal ...
openaire   +2 more sources

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