Results 31 to 40 of about 944,215 (294)
Nuclear Physics B, 2000 22 pages, 4 figures ...
Costa, Miguel S., Perry, Malcolm J.
openaire +2 more sources
International Journal of Modern Physics D, 2021 In this paper, we consider a version of the Hayden–Preskill thought experiment in which the message thrown into the black hole is itself a smaller black hole. We then discuss the implications of the existence of a recovery channel for this black hole message at asymptotic infinity, resulting in a sharpening of the black hole information paradox for ...
Bao, Ning, Wildenhain, Elizabeth
openaire +2 more sources
BLACK HOLE UNCERTAINTIES [PDF]
Modern 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
Shapes and Positions of Black Hole Shadows in Accretion Disks and Spin Parameters of Black Holes
, 2004 Can we determine a spin parameter of a black hole by observation of a black hole shadow in an accretion disk? In order to answer this question, we make a qualitative analysis and a quantitative analysis of a shape and a position of a black hole shadow ...
Fabian A. C. +11 more
core +2 more sources
The 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
Explosive Nucleosynthesis from GRB and Hypernova Progenitors: Direct Collapse versus Fallback [PDF]
, 2006 The collapsar engine behind long-duration gamma-ray bursts extracts the energy released from the rapid accretion of a collapsing star onto a stellar-massed black hole. In a collapsing star, this black hole can form in two ways: the direct collapse of the
Fryer, Christopher L. +2 more
core +3 more sources
Black holes die hard: can one spin-up a black hole past extremality?
, 2010 A possible process to destroy a black hole consists on throwing point particles with sufficiently large angular momentum into the black hole. In the case of Kerr black holes, it was shown by Wald that particles with dangerously large angular momentum are
Andrea Nerozzi +4 more
core +1 more source
Disturbing the Black Hole [PDF]
, 1998 I describe some examples in support of the conjecture that the horizon area of a near equilibrium black hole is an adiabatic invariant. These include a Schwarzschild black hole perturbed by quasistatic scalar fields (which may be minimally or ...
Bekenstein, Jacob D.
core +2 more sources
Thermodynamics and phase transition of BTZ black hole in a cavity
Nuclear Physics B, 2022 In this paper, we study the thermodynamics and phase transition of a BTZ black hole in a finite space region, namely a cavity. By imposing a temperature-fixed boundary condition on the wall of the cavity and evaluating the Euclidean action, we derive the
Yuchen Huang, Jun Tao
doaj +1 more source
A Simple, Approximate Method for Analysis of Kerr-Newman Black Hole Dynamics and Thermodynamics [PDF]
, 2006 In this work we present a simple, approximate method for analysis of the basic dynamical and thermodynamical characteristics of Kerr-Newman black hole.
Chitta Baral +3 more
core +3 more sources