scholarly journals Higher dimensional non-Kerr black hole and energy extraction

2014 ◽  
Vol 89 (2) ◽  
Author(s):  
Sushant G. Ghosh ◽  
Pankaj Sheoran
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Energy Extraction ◽  
Higher Dimensional

Wormholes and Fermionic superradiance

2021 ◽  
Author(s):  
Wen-Xiang Chen
Keyword(s):  
Black Hole ◽  
Algebraic Structure ◽  
Hawking Radiation ◽  
Kerr Black Hole ◽  
Higher Dimensional ◽  
Action Structure

In this article, I propose that since Hawking radiation may be a type of superradiation, the action of superradiation with a preset boundary satisfies some higher dimensional action structure, for example, the superradiance of a boson on a preset boundary for a Kerr black hole satisfies the algebraic structure of a boson on a Kerr-Schild black hole. I think the superradiance of a bounded fermion to a Kerr-structured black hole satisfies the mapping structure of the wormhole.

scholarly journals Energy extraction from a Konoplya–Zhidenko rotating non-Kerr black hole

2018 ◽  
Vol 926 ◽  
pp. 83-94 ◽  
Author(s):  
Fen Long ◽  
Songbai Chen ◽  
Shangyun Wang ◽  
Jiliang Jing
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Energy Extraction

scholarly journals ROTATING NON-KERR BLACK HOLE AND ENERGY EXTRACTION

2012 ◽  
Vol 751 (2) ◽  
pp. 148 ◽  
Author(s):  
Changqing Liu ◽  
Songbai Chen ◽  
Jiliang Jing
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Energy Extraction

scholarly journals A New Approach to Black Hole Quasinormal Modes: A Review of the Asymptotic Iteration Method

2012 ◽  
Vol 2012 ◽  
pp. 1-42 ◽  
Author(s):  
H. T. Cho ◽  
A. S. Cornell ◽  
Jason Doukas ◽  
T.-R. Huang ◽  
Wade Naylor
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Iteration Method ◽  
Quasinormal Modes ◽  
Kerr Black Hole ◽  
Asymptotic Iteration Method ◽  
Wkb Method ◽  
New Approach ◽  
Higher Dimensional ◽  
First Time

We discuss how to obtain black hole quasinormal modes (QNMs) using the asymptotic iteration method (AIM), initially developed to solve second-order ordinary differential equations. We introduce the standard version of this method and present an improvement more suitable for numerical implementation. We demonstrate that the AIM can be used to find radial QNMs for Schwarzschild, Reissner-Nordström (RN), and Kerr black holes in a unified way. We discuss some advantages of the AIM over the continued fractions method (CFM). This paper presents for the first time the spin 0, 1/2 and 2 QNMs of a Kerr black hole and the gravitational and electromagnetic QNMs of the RN black hole calculated via the AIM and confirms results previously obtained using the CFM. We also present some new results comparing the AIM to the WKB method. Finally we emphasize that the AIM is well suited to higher-dimensional generalizations and we give an example of doubly rotating black holes.

scholarly journals NON-COMMUTATIVE KERR BLACK HOLE

2011 ◽  
Vol 08 (03) ◽  
pp. 657-668 ◽  
Author(s):  
ELISABETTA DI GREZIA ◽  
GIAMPIERO ESPOSITO
Keyword(s):  
Black Hole ◽  
Kerr Black Hole ◽  
Rotational Energy ◽  
Rotating Frame ◽  
Energy Extraction ◽  
First Order ◽  
Penrose Process

This paper applies the first-order Seiberg–Witten map to evaluate the first-order non-commutative Kerr tetrad. The classical tetrad is taken to follow the locally non-rotating frame prescription. We also evaluate the tiny effect of non-commutativity on the efficiency of the Penrose process of rotational energy extraction from a black hole.

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