Hawking radiation and particle dynamics in accelerating non-Kerr black holes

2021 ◽  
Vol 53 (10) ◽  
Author(s):  
Usman A. Gillani ◽  
Khalid Saifullah
Keyword(s):  
Black Holes ◽  
Hawking Radiation ◽  
Particle Dynamics ◽  
Kerr Black Holes

S-MATRICES FOR QUANTUM CHARGED MASSIVE SCALAR PARTICLES ON KERR BLACK HOLES

2001 ◽  
Vol 16 (22) ◽  
pp. 1465-1477 ◽  
Author(s):  
N. E. FIRSOVA
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Massive Scalar ◽  
Numerical Computations ◽  
Scattering Problems ◽  
Complex Scalar ◽  
Scalar Particles ◽  
Complex Scalar Field ◽  
Kerr Black Holes

The results obtained recently on the scattering problems connected with the contribution of the topologically inequivalent configurations of the massless complex scalar field on Kerr black holes to the Hawking radiation are extended to include the massive case as well. The corresponding S-matrices are examined and presented in the form convenient for numerical computations.

scholarly journals Evolution of primordial black hole spin due to Hawking radiation

2020 ◽  
Vol 494 (1) ◽  
pp. 1257-1262 ◽  
Author(s):  
Alexandre Arbey ◽  
Jérémy Auffinger ◽  
Joseph Silk
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
High Spin ◽  
Hawking Radiation ◽  
Primordial Black Hole ◽  
Mass Limit ◽  
Lower Mass ◽  
Thin Disc ◽  
Kerr Black Holes ◽  
Lower Mass Limit

ABSTRACT Near extremal Kerr black holes (BHs) are subject to the Thorne limit $a\lt a^*_{\rm lim}=0.998$ in the case of thin disc accretion, or some generalized version of this in other disc geometries. However, any limit that differs from the thermodynamics limit a* < 1 can in principle be evaded in other astrophysical configurations, and in particular if the near extremal BHs are primordial and subject to evaporation by Hawking radiation only. We derive the lower mass limit above which Hawking radiation is slow enough so that a primordial black hole with a spin initially above some generalized Thorne limit can still be above this limit today. Thus, we point out that the observation of Kerr BHs with extremely high spin should be a hint of either exotic astrophysical mechanisms or primordial origin.

Black holes

2018 ◽  
Author(s):  
Michael Kachelriess
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Thermal Radiation ◽  
Event Horizon ◽  
Hawking Radiation ◽  
Information Paradox ◽  
Classical Physics ◽  
Physical Singularity ◽  
Kerr Black Holes ◽  
Classical Picture

Black holes are introduced as solutions of Einsteins equations contain-ing a physical singularity covered by an event horizon. The properties of Schwarzschild and of Kerr black holes are examined. It is demonstrated that the event horizon of a black hole can only increase within classical physics. However, the event horizon is an infinite redshift surface and emits in the semi-classical picture thermal radiation. This Hawking radiation leads in turn to the information paradox.

scholarly journals Effective state, Hawking radiation and quasi-normal modes for Kerr black holes

2013 ◽  
Vol 2013 (6) ◽  
Author(s):  
C. Corda ◽  
S. H. Hendi ◽  
R. Katebi ◽  
N. O. Schmidt
Keyword(s):  
Black Holes ◽  
Hawking Radiation ◽  
Normal Modes ◽  
Kerr Black Holes

S-MATRICES FOR QUANTUM CHARGED MASSLESS SCALAR PARTICLES ON KERR BLACK HOLES

2000 ◽  
Vol 15 (28) ◽  
pp. 4463-4476
Author(s):  
N. E. FIRSOVA
Keyword(s):  
Black Holes ◽  
Scalar Field ◽  
Hawking Radiation ◽  
Massless Scalar ◽  
Numerical Computations ◽  
Scattering Problems ◽  
Complex Scalar ◽  
Scalar Particles ◽  
Complex Scalar Field ◽  
Kerr Black Holes

The scattering problems that arise when considering the contribution of the topologically inequivalent configurations (TIC's) of the massless complex scalar field on Kerr black holes to the Hawking radiation are studied. The corresponding S-matrices are examined and presented in the form convenient for numerical computations.

scholarly journals Hawking Radiation by Kerr Black Holes and Conformal Symmetry

2010 ◽  
Vol 105 (21) ◽  
Author(s):  
Ivan Agullo ◽  
José Navarro-Salas ◽  
Gonzalo J. Olmo ◽  
Leonard Parker
Keyword(s):  
Black Holes ◽  
Hawking Radiation ◽  
Conformal Symmetry ◽  
Kerr Black Holes

scholarly journals Islands and stretched horizon

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Yoshinori Matsuo
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Hawking Radiation ◽  
Entanglement Entropy ◽  
Total System ◽  
Island Rule ◽  
Asymptotically Flat ◽  
Flat Spacetime ◽  
Ads Spacetime ◽  
Hole Geometry

Abstract Recently it was proposed that the entanglement entropy of the Hawking radiation contains the information of a region including the interior of the event horizon, which is called “island.” In studies of the entanglement entropy of the Hawking radiation, the total system in the black hole geometry is separated into the Hawking radiation and black hole. In this paper, we study the entanglement entropy of the black hole in the asymptotically flat Schwarzschild spacetime. Consistency with the island rule for the Hawking radiation implies that the information of the black hole is located in a different region than the island. We found an instability of the island in the calculation of the entanglement entropy of the region outside a surface near the horizon. This implies that the region contains all the information of the total system and the information of the black hole is localized on the surface. Thus the surface would be interpreted as the stretched horizon. This structure also resembles black holes in the AdS spacetime with an auxiliary flat spacetime, where the information of the black hole is localized at the interface between the AdS spacetime and the flat spacetime.

scholarly journals Growth of accretion driven scalar hair around Kerr black holes

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Jamie Bamber ◽  
Katy Clough ◽  
Pedro G. Ferreira ◽  
Lam Hui ◽  
Macarena Lagos
Keyword(s):  
Black Holes ◽  
Scalar Hair ◽  
Kerr Black Holes
Sign in / Sign up

Export Citation Format

Share Document