scholarly journals Entropy/area spectra of the charged black hole from quasinormal modes

2010 ◽  
Vol 81 (10) ◽  
Author(s):  
Shao-Wen Wei ◽  
Yu-Xiao Liu ◽  
Ke Yang ◽  
Yuan Zhong
Keyword(s):  
Black Hole ◽  
Quasinormal Modes ◽  
Charged Black Hole ◽  
Area Spectra

scholarly journals Quasinormal modes of charged regular black hole

2020 ◽  
pp. 1-5
Author(s):  
L.A. López ◽  
V. Hinojosa
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Cosmological Constant ◽  
Quasinormal Modes ◽  
Eikonal Approximation ◽  
Charged Black Hole ◽  
Null Geodesics ◽  
Regular Black Hole ◽  
Effective Cosmological Constant

The quasinormal modes (QNMs) of a charged regular black hole are calculated in the eikonal approximation. In the eikonal limit, the QNMs of the black hole are determined by the parameters of unstable circular null geodesics. The behavior of the QNMs are compared with the QNMs of a Reisner–Nordström black hole by fixing some of the parameters that characterize the black holes and varying others. We observed that the parameter that is related to the effective cosmological constant at small distances determines the behavior of the QNMs of a regular charged black hole.

The Reissner–Nordström black hole surrounded by quintessence and a cloud of strings: Thermodynamics and quasinormal modes

2019 ◽  
Vol 28 (01) ◽  
pp. 1950023 ◽  
Author(s):  
J. M. Toledo ◽  
V. B. Bezerra
Keyword(s):  
Heat Capacity ◽  
Black Hole ◽  
Scalar Field ◽  
Quasinormal Modes ◽  
Hawking Temperature ◽  
Charged Black Hole

We obtain the solution corresponding to a static charged black hole (Reissner–Nordström black hole) surrounded by quintessence and a cloud of strings, study its thermodynamics and calculate the quasinormal frequencies for a scalar field in this background spacetime. The mass, Hawking temperature and heat capacity are analyzed and the roles played by the sources corresponding to the quintessence and the cloud of strings are showed up. In what concerns the quasinormal modes, we fixed the value of the quintessence parameter [Formula: see text], taking [Formula: see text], calculate the quasinormal frequencies and emphasize the effects due to the cloud of strings.

scholarly journals Significance of black hole quasinormal modes: A closer look

2020 ◽  
Vol 101 (10) ◽  
Author(s):  
Ramin G. Daghigh ◽  
Michael D. Green ◽  
Jodin C. Morey
Keyword(s):  
Black Hole ◽  
Quasinormal Modes

scholarly journals Regular charged black hole construction in dimensions

2012 ◽  
Vol 376 (8-9) ◽  
pp. 893-898 ◽  
Author(s):  
S. Habib Mazharimousavi ◽  
M. Halilsoy ◽  
T. Tahamtan
Keyword(s):  
Black Hole ◽  
Charged Black Hole

scholarly journals New non-extremal and BPS hairy black holes in gauged $$ \mathcal{N} $$ = 2 and $$ \mathcal{N} $$ = 8 supergravity

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
Andres Anabalon ◽  
Dumitru Astefanesei ◽  
Antonio Gallerati ◽  
Mario Trigiante
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Boundary Conditions ◽  
Charged Black Hole ◽  
Dual Theory ◽  
Real Numbers ◽  
Hairy Black Holes ◽  
Interpolation Parameter ◽  
Black Hole Solutions ◽  
Extremal Black Holes

Abstract In this article we study a family of four-dimensional, $$ \mathcal{N} $$ N = 2 supergravity theories that interpolates between all the single dilaton truncations of the SO(8) gauged $$ \mathcal{N} $$ N = 8 supergravity. In this infinitely many theories characterized by two real numbers — the interpolation parameter and the dyonic “angle” of the gauging — we construct non-extremal electrically or magnetically charged black hole solutions and their supersymmetric limits. All the supersymmetric black holes have non-singular horizons with spherical, hyperbolic or planar topology. Some of these supersymmetric and non-extremal black holes are new examples in the $$ \mathcal{N} $$ N = 8 theory that do not belong to the STU model. We compute the asymptotic charges, thermodynamics and boundary conditions of these black holes and show that all of them, except one, introduce a triple trace deformation in the dual theory.

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