scholarly journals Scalar perturbations on the background of Kerr black holes in the quadratic dynamical Chern-Simons gravity

2019 ◽  
Vol 99 (4) ◽  
Author(s):  
Yuan-Xing Gao ◽  
Yang Huang ◽  
Dao-Jun Liu
Keyword(s):  
Black Holes ◽  
Kerr Black Holes ◽  
Chern Simons ◽  
Scalar Perturbations

scholarly journals Massive scalar field perturbation on Kerr black holes in dynamical Chern–Simons gravity

2021 ◽  
Vol 81 (5) ◽  
Author(s):  
Shao-Jun Zhang
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Scalar Field ◽  
Massive Scalar ◽  
Coupling Constant ◽  
Field Mass ◽  
Field Perturbation ◽  
Massive Scalar Field ◽  
Kerr Black Holes ◽  
Chern Simons

AbstractWe study massive scalar field perturbation on Kerr black holes in dynamical Chern–Simons gravity by performing a $$(2+1)$$ ( 2 + 1 ) -dimensional simulation. Object pictures of the wave dynamics in time domain are obtained. The tachyonic instability is found to always occur for any nonzero black hole spin and any scalar field mass as long as the coupling constant exceeds a critical value. The presence of the mass term suppresses or even quench the instability. The quantitative dependence of the onset of the tachyonic instability on the coupling constant, the scalar field mass and the black hole spin is given numerically.

scholarly journals Chern-Simons black holes: scalar perturbations, mass and area spectrum and greybody factors

2010 ◽  
Vol 2010 (8) ◽  
Author(s):  
Pablo González ◽  
Eleftherios Papantonopoulos ◽  
Joel Saavedra
Keyword(s):  
Black Holes ◽  
Area Spectrum ◽  
Chern Simons ◽  
Scalar Perturbations

Superradiant stability of the Kerr black hole

2020 ◽  
Vol 29 (01) ◽  
pp. 2050009 ◽  
Author(s):  
Wen-Xiang Chen ◽  
Zi-Yang Huang
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Kerr Black Hole ◽  
Algebraic Methods ◽  
Stability Conditions ◽  
Parameter Region ◽  
Kerr Black Holes ◽  
The Stability ◽  
Scalar Perturbations

We know that Kerr black holes are stable for specific conditions. In this paper, we use algebraic methods to prove the stability of the Kerr black hole against certain scalar perturbations. This provides new results for the previously obtained superradiant stability conditions of Kerr black hole. Hod proved that Kerr black holes are stable to massive perturbations in the regime [Formula: see text]. In this paper, we consider some other situations of the stability of the black hole in the complementary parameter region[Formula: see text]

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

scholarly journals Second-order perturbations of Kerr black holes: Formalism and reconstruction of the first-order metric

2021 ◽  
Vol 103 (10) ◽  
Author(s):  
Nicholas Loutrel ◽  
Justin L. Ripley ◽  
Elena Giorgi ◽  
Frans Pretorius
Keyword(s):  
Black Holes ◽  
Second Order ◽  
First Order ◽  
Kerr Black Holes

scholarly journals Aschenbach effect: Unexpected topology changes in the motion of particles and fluids orbiting rapidly rotating Kerr black holes

2005 ◽  
Vol 71 (2) ◽  
Author(s):  
Zdeněk Stuchlík ◽  
Petr Slaný ◽  
Gabriel Török ◽  
Marek A. Abramowicz
Keyword(s):  
Black Holes ◽  
Topology Changes ◽  
Kerr Black Holes

scholarly journals Initial data for perturbed Kerr black holes on hyperboloidal slices

2014 ◽  
Vol 31 (16) ◽  
pp. 165001 ◽  
Author(s):  
David Schinkel ◽  
Rodrigo Panosso Macedo ◽  
Marcus Ansorg
Keyword(s):  
Black Holes ◽  
Initial Data ◽  
Kerr Black Holes
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