Anti-de Sitter Hayward black holes in Einstein–Gauss–Bonnet gravity

Ghosh, Sushant G.; Kumar, Arun; Singh, Dharm Veer

doi:10.1016/j.dark.2020.100660

Cited by 23 publications

(20 citation statements)

References 42 publications

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“…Lovelock [46] demonstrated the Einstein gravity could be extended by series of higher order curvature terms such that the equation of motion still remains second order. The simplest such extension is the Einstein Gauss Bonnet gravity when coupled with the non linear electrodynamics, the action reads [16,47,48] where α is the coupling constant, g is the determinant of metric tensor g µν and R is the Ricci Scalar. The Gauss-Bonnet Lagrangian is a combination of Ricci tensor R ab and Riemann tensor R abcd as…”

Section: D Egb Bardeen Black Holesmentioning

confidence: 99%

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Probing strong gravitational lensing by Bardeen black holes in 4D Einstein--Gauss--Bonnet gravity

Islam¹,

Ghosh²,

Maharaj³

2022

Preprint

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Section: D Egb Bardeen Black Holesmentioning

confidence: 99%

“…with F = g 2(D−3) /2r 2(D−2) . Here we choose general static, spherically symmetric metric anstaz in arbitary dimensions [47,50] as…”

Section: D Egb Bardeen Black Holesmentioning

confidence: 99%

Probing strong gravitational lensing by Bardeen black holes in 4D Einstein--Gauss--Bonnet gravity

Islam¹,

Ghosh²,

Maharaj³

2022

Preprint

Self Cite

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“…Regular black holes are also found in Einstein-Gauss-Bonnet gravity [22][23][24][25], f (r) gravity [26], quadratic gravity [27], f (T ) gravity [28], noncommutative geometry [29], rotating black hole solution [30,31], and P-V criticality [32][33][34][35][36].…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic properties of Bardeen black holes in dRGT massive gravity

Singh,

Gupta

et al. 2022

Preprint

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The Bardeen black hole solution is the first spherically symmetric regular black hole based on the Sakharov and Gliner proposal which is a modification of the Schwarzschild black hole. We present the Bardeen black hole solution in the presence of the de Rham, Gabadaadze, and Tolly (dRGT) massive gravity, which is regular everywhere in the presence of a nonlinear source. The obtained solution reduces to the Bardeen black hole in the absence of a massive gravity parameter, and the Schwarzschild black hole when magnetic charge g = 0. We investigated the thermodynamic quantities, that is, mass (M), temperature (T ), entropy (S), and free energy (F ), in terms of the horizon radius for both canonical and grand canonical ensembles. We checked the local and global stability of the obtained solution by studying the heat capacity and free energy. The heat capacity changes sign at r = r c . The black hole is thermodynamically stable with a positive heat capacity C > 0 (i.e., globally preferred with negative free energy F < 0). In addition, we studied the phase structure of the obtained solution in both ensembles.

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“…RBHs have also been studied from various aspects including entropy [15] and thermodynamics [16][17][18], the quasilocal energy [19], the energy conditions [20] and the inner horizon instability and unstable cores [21]. Rotating RBHs [22,23] and RBHs in higher-order curvature gravities [24,25] have also been investigated.…”

Section: Introductionmentioning

confidence: 99%

Observational optical constraints of regular black holes

Jafarzade¹,

Zangeneh²

2021

Preprint

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In this work, we consider a recent novel regular black hole solution, which we denote the Simpson-Visser black-bounce model and investigate circular null geodesics to find the connection between the photon sphere, the event horizon and the black hole shadow radii. We also study the energy emission rate for this geometry and discuss how the parameters of the model affect the emission of particles around the black hole. Furthermore, we compare the resulting shadow of this regular black hole with observational data of the Event Horizon Telescope and find the allowed regions of the model parameters for which the obtained shadow is consistent with the data. Finally, we employ the correspondence between the quasinormal modes in the eikonal limit and shadow radius to study the scalar field perturbations in this background.

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Anti-de Sitter Hayward black holes in Einstein–Gauss–Bonnet gravity

Cited by 23 publications

References 42 publications

Probing strong gravitational lensing by Bardeen black holes in 4D Einstein--Gauss--Bonnet gravity

Probing strong gravitational lensing by Bardeen black holes in 4D Einstein--Gauss--Bonnet gravity

Thermodynamic properties of Bardeen black holes in dRGT massive gravity

Observational optical constraints of regular black holes

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