Quasinormal modes of regular black holes

Flachi, Antonino; Lemos, José P. S.

doi:10.1103/physrevd.87.024034

Cited by 157 publications

(109 citation statements)

References 32 publications

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“…A detailed discussion of the circular geodesics of the regular Bardeen and Ayon-Beato-Garcia (ABG) black hole and no-horizon spacetimes and its implication to simple optical phenomena can be found in [31]. Moreover, scalar, electromagnetic and gravitational perturbations of the regular black holes in nonlinear electrodynamics, their quasinormal modes and stabilities have been discussed in several works, see for instance [37][38][39][40][41][42]. Note that the geodesic structure of the regular black holes outside the horizon is similar to those of the Schwarzschild or Reissner-Nordström (RN) black hole spacetimes, but under the inner horizon, no circular geodesics can exist.…”

Section: Introductionmentioning

confidence: 99%

Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics

2017

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We construct regular rotating black hole and no-horizon spacetimes based on the recently introduced spherically symmetric generic regular black hole spacetimes related to electric or magnetic charge under nonlinear electrodynamics coupled to general relativity that for special values of the spacetime parameters reduce to the Bardeen and Hayward spacetimes. We show that the weak and strong energy conditions are violated inside the Cauchy horizons of these generic rotating black holes. We give the boundary between the rotating black hole and no-horizon spacetimes and determine the black hole horizons and the boundary of the ergosphere. We introduce the separated Carter equations for the geodesic motion in these rotating spacetimes. For the most interesting new class of the regular spacetimes, corresponding for magnetic charges to the Maxwell field in the weak field limit of the nonlinear electrodynamics, we determine the structure of the circular geodesics and discuss their properties. We study the epicyclic motion of a neutral particle moving along the stable circular orbits around the "Maxwellian" rotating regular black holes. We show that epicyclic frequencies measured by the distant observers and related to the oscillatory motion of the neutral test particle along the stable circular orbits around the rotating singular and regular Maxwellian black holes are always smaller than ones in the Kerr spacetime.

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Section: Introductionmentioning

confidence: 99%

Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics

2017

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“…The solution was obtained introducing an energy-momentum tensor interpreted as the gravitational field of some sort of nonlin-ear magnetic monopole charge β. Recently, the quasinormal modes of the regular Bardeen black hole were investigated for gravitational perturbation [33], scalar perturbation [34][35][36], and Dirac perturbation [37]. Ghaderi and Malakolkalami [38] investigated the effects of quintessence on the thermodynamics of the black hole.…”

Section: Introductionmentioning

confidence: 99%

Quasinormal modes of gravitational perturbation around regular Bardeen black hole surrounded by quintessence

2018

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In this paper, Quasinormal modes of gravitational perturbation are investigated for the regular Bardeen black hole surrounded by quintessence. Considering the metric of the Bardeen spacetime surrounded by quintessence, we derived the perturbation equation for gravitational perturbation using Regge-Wheeler gauge. The third order WentzelKramers-Brillouin (WKB) approximation method is used to evaluate quasinormal frequencies. Explicitly, the behaviors of the black hole potential and quasinormal modes were plotted. The results show that, due to the presence of quintessence, the gravitational perturbation around the black hole damps more slowly and oscillates more slowly.

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“…The former way refers to physical particle fields such as scalar, Dirac, and electromagnetic (EM) fields; the latter one is the gravitational perturbation resulting in GWs. Many researches into regular BH QNMs have made great progress, focusing on scalar fields [14][15][16][17] and Dirac perturbations [18]. Usually the singularity of a regular black hole may vanish under the condition that gravitation be coupled to a suitable nonlinear electrodynamics (NLED) field; therefore we consider the QNMs of EM perturbations in specific regular spacetimes to be more meaningful.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear electromagnetic quasinormal modes and Hawking radiation of a regular black hole with magnetic charge

Lin

Yang

2015

Eur. Phys. J. C

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Based on a regular exact black hole (BH) from nonlinear electrodynamics (NLED) coupled to general relativity, we investigate the stability of such BH through the Quasinormal Modes (QNMs) of electromagnetic (EM) field perturbations and its thermodynamics through Hawking radiation. In perturbation theory, we can deduce the effective potential from a nonlinear EM field. The comparison of the potential function between regular and RN BHs could predict similar QNMs. The QNM frequencies tell us the effect of the magnetic charge q, the overtone n, and the angular momentum number l on the dynamic evolution of NLED EM field. Furthermore we also discuss the cases of near-extreme conditions of such a magnetically charged regular BH. The corresponding QNM spectrum illuminates some special properties in the near-extreme cases. For the thermodynamics, we employ the Hamilton-Jacobi method to calculate the nearhorizon Hawking temperature of the regular BH and reveal the relationship between the classical parameters of the black hole and its quantum effects.

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Quasinormal modes of regular black holes

Cited by 157 publications

References 32 publications

Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics

Generic rotating regular black holes in general relativity coupled to nonlinear electrodynamics

Quasinormal modes of gravitational perturbation around regular Bardeen black hole surrounded by quintessence

Nonlinear electromagnetic quasinormal modes and Hawking radiation of a regular black hole with magnetic charge

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