Nonlinear electrodynamics and regular black holes

Sajadi, S. N.; Riazi, N.

doi:10.1007/s10714-017-2209-8

Cited by 32 publications

(18 citation statements)

References 62 publications

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“…The electric field vanishes as r → 0 and r → ∞ and achieves its maximum E c at r c (see figure 2). In order to get information the nature of r c , see [65] and the reference therein. The limit of Ricci and Kretschmann scalar K 1 = R abcd R abcd for metric (7) when r → 0 are…”

Section: Basic Equationsmentioning

confidence: 99%

Dynamical and thermal stabilities of nonlinearly charged AdS black holes

2019

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Section: Basic Equationsmentioning

confidence: 99%

Dynamical and thermal stabilities of nonlinearly charged AdS black holes

2019

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“…It is worth mentioning that such regular black holes are not vacuum solutions of the Einstein field equations. These regular solutions often include a special class of nonlinear electrodynamics violating energy conditions in the vicinity of the black hole [2]- [8]. Till date there has been a lot of significant work in regular solutions of gravitating systems [9]- [19].…”

Section: Introductionmentioning

confidence: 99%

Physical Properties of a Regular Rotating Black Hole: Thermodynamics, Stability, Quasinormal Modes

Hendi,

Sajadi,

Khademi

2020

Preprint

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Respecting the angular momentum conservation of torque-free systems, it is natural to consider rotating solutions of massive objects. Besides that, motivated by the realistic astrophysical black holes that rotate, we use the Newman-Janis formalism to construct a regular rotating black hole. We start with a nonlinearly charged regular static black hole in the framework of the standard general relativity and then obtain the associated rotating solution through such a formalism. We investigate the geometrical properties of the metric by studying the boundary of ergosphere. We also analyze thermodynamic properties of the solution in AdS spacetime and examine thermal stability and possible phase transition. In addition, we perturb the black hole by using of a real massless scalar field as a probe to investigate its dynamic stability. We obtain an analytic expression for the real and imaginary parts of the quasinormal frequencies. Finally, we look for a connection between the quasinormal frequencies and the properties of the photon sphere in the eikonal limit.

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“…After their pioneering work, the subsequent ideas presented by Bardeen, 6 Dymnikova,7 Ayón-Beato and García 8 and Bronnikov 9,10 have been closely followed in order to obtain regular BH solutions, many of them employing nonlinear electrodynamics as an appropriate matter source (see, for example, Ref. 11 and references therein). Regarding the plausibility of these regular BH solutions, the energy conditions play an important role.…”

Section: Introductionmentioning

confidence: 99%