scholarly journals Quantum entropy of the Kerr black hole arising from gravitational perturbation

2001 ◽  
Vol 64 (6) ◽  
Author(s):  
Jiliang Jing ◽  
Mu-Lin Yan
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Quantum Entropy ◽  
Gravitational Perturbation

scholarly journals Conical geometry and quantum entropy of a charged Kerr black hole

1996 ◽  
Vol 54 (6) ◽  
pp. 3932-3940 ◽  
Author(s):  
Robert B. Mann ◽  
Sergey N. Solodukhin
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Quantum Entropy ◽  
Charged Kerr Black Hole

scholarly journals Choked accretion onto a Kerr black hole

2021 ◽  
Vol 103 (2) ◽  
Author(s):  
Alejandro Aguayo-Ortiz ◽  
Olivier Sarbach ◽  
Emilio Tejeda
Keyword(s):  
Black Hole ◽  
Kerr Black Hole

scholarly journals Influence of the geometric configuration of accretion flow on the black hole spin dependence of relativistic acoustic geometry

2018 ◽  
Vol 27 (03) ◽  
pp. 1850023 ◽  
Author(s):  
Pratik Tarafdar ◽  
Tapas K. Das
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Geometric Configuration ◽  
Surface Gravity ◽  
Linear Perturbation ◽  
Flow Profile ◽  
White Hole ◽  
Accretion Flow ◽  
Black Hole Spin ◽  
General Relativistic

Linear perturbation of general relativistic accretion of low angular momentum hydrodynamic fluid onto a Kerr black hole leads to the formation of curved acoustic geometry embedded within the background flow. Characteristic features of such sonic geometry depend on the black hole spin. Such dependence can be probed by studying the correlation of the acoustic surface gravity [Formula: see text] with the Kerr parameter [Formula: see text]. The [Formula: see text]–[Formula: see text] relationship further gets influenced by the geometric configuration of the accretion flow structure. In this work, such influence has been studied for multitransonic shocked accretion where linear perturbation of general relativistic flow profile leads to the formation of two analogue black hole-type horizons formed at the sonic points and one analogue white hole-type horizon which is formed at the shock location producing divergent acoustic surface gravity. Dependence of the [Formula: see text]–[Formula: see text] relationship on the geometric configuration has also been studied for monotransonic accretion, over the entire span of the Kerr parameter including retrograde flow. For accreting astrophysical black holes, the present work thus investigates how the salient features of the embedded relativistic sonic geometry may be determined not only by the background spacetime, but also by the flow configuration of the embedding matter.

Entropy Correction for Kerr Black Hole

2005 ◽  
Vol 44 (6) ◽  
pp. 1037-1040
Author(s):  
Ren Zhao ◽  
Sheng-Li Zhang
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Entropy Correction
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