Shadow thermodynamics of AdS black hole in regular spacetime

Guo, Sen; Li, Guan-Ru; Li, Guo-Ping

doi:10.48550/arxiv.2205.04957

Cited by 6 publications

(6 citation statements)

References 22 publications

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“…Therefore, if we can figure out the observational effect of the mean first passage time of the thermodynamic PT in the future, we may further constrain the monopole parameter in related astronomical observations. Recently, there has been some new theoretical and observational progress on the relationship between BH thermodynamics and the BH shadow [1][2][3][4][5][6][59][60][61][62][63][64][65][66][67][68]. The thermodynamic PT of a charged AdS BH with a global monopole might be reflected in the shadow radius, which can give an upper limit to the monopole parameter of the BH.…”

Section: Discussionmentioning

confidence: 99%

Effects of a global monopole on the thermodynamic phase transition of a charged AdS black hole*

Luo¹,

Yu²,

Li³

2022

Chinese Phys. C

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We study the dynamical properties of thermodynamic phase transition (PT) of the charged AdS black hole (BH) with global monopole via the Gibbs free energy landscape and reveal the effects of the global monopole on the kinetics of thermodynamic PTs. First, we briefly review the thermodynamics of the charged AdS BH with global monopole. Then, we introduce the Gibbs free energy landscape to investigate the thermodynamic stability of BH states. Because of thermal fluctuations, the small black hole (SBH) state can transit to the large black hole (LBH) state, and vice versa. Moreover, we use the Fokker-Planck equation with the reflecting boundary condition to study the probability evolution of the BH state with and without a global monopole separately. We find that for both the SBH and LBH states, the global monopole could slow down the evolution of the BH state. In addition, we obtain the relationship between the first passage time and the monopole parameter $\eta$. The result shows that as the monopole parameter $\eta$ increases, the mean first passage time will be longer for both the SBH and LBH states.

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Section: Discussionmentioning

confidence: 99%

Effects of a global monopole on the thermodynamic phase transition of a charged AdS black hole*

Luo¹,

Yu²,

Li³

2022

Chinese Phys. C

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“…Therefore, motivated by the investigations on these spacetimes, interplays between black hole thermodynamics and optical properties should be established. In addition, the phase transition and microstructure states of AdS black holes in [51][52][53] were analyzed through their shadow. Moreover, the specific relation between shadow and thermodynamics of black holes was derived for regular space-times [54].…”

Section: Introductionmentioning

confidence: 99%

Shadow thermodynamics of non-linear charged Anti-de Sitter black holes*

Zhou

et al. 2022

Chinese Phys. C

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As well we know when the vacuum polarization in the quantum electrodynamics emerges, the non-linear interaction between the electromagnetic fields should be considered. And the corresponding field of non-linear electrodynamics could have important effects on black hole physics. In this work, we focus on the relationship between the observable quantity--the shadow radius and the first-order phase transition for the non-linear charged AdS black hole in the frame of the Einstein-power-Yang-Mills gravity. The results show that under a certain condition there exist the first-order phase transition both from the viewpoint of the shadow radius and the horizon radius which are as the function with temperature (or pressure). From the viewpoint of the shadow radius, the phase transition temperature is higher than that from the viewpoint of the horizon radius with the same condition. This may be due to the non-linear Yang Mills charge and the gravitational effect. These indicate that the shadow radius can be regarded a probe to reveal the thermodynamic phase transition information of black holes. When the system is undergoing the phase transition in two cases of the different non-linear YM charge parameter: $\gamma=1,~1.5$, the thermal profiles of the coexistent big and small black hole phases with the temperature are presented. Furthermore, the effects of non-linear YM charge parameter on the shadow radius and the thermal profile are also investigated.Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Article funded by SCOAP3 and published under licence by Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Science and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd

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“…the shadow properties, [9][10][11][12][13][14][15][16][17][18][19][20], gravitational lensing [21][22][23][24][25][26][27], accretion disk properties [28][29][30][31][32][33][34][35] and orbital precession [36][37][38][39][40][41][42][43][44]. The similar observable properties were studied in singularity-free compact objects (regular black holes and worm holes) [45][46][47][48][49][50][51][52][53][54][55][56]. The major problem of powering active galactic nuclei, X-ray binaries, and quasars are the most important issues today in high-energy astrophysics.…”

Section: Introductionmentioning

confidence: 99%

Rotational energy extraction from the Kerr black hole's mimickers

Patel¹,

Acharya²,

Bambhaniya³

et al. 2022

Preprint

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In this paper, the Penrose process is being used to extract rotational energy from regular black holes. Initially, we consider the rotating Simpson-Visser regular spacetime which describes the class of geometries of the Kerr black hole's mimickers. The Penrose process is then studied through conformally transformed rotating singular and regular black hole solutions. These both Simpson-Visser and conformally transformed geometries depend on mass, spin, and an additional regularisation parameter l. In both cases, we investigate how the spin and regularisation parameter l affects the configuration of an ergoregion and event horizons. Surprisingly, we find that the energy extraction efficiency from the event horizon surface is not dependent on the regularisation parameter l in the Simpson-Visser regular spacetimes and hence it does not vary from the Kerr black hole case. While, in the conformally transformed singular and regular black holes, we obtain the efficiency rate of extracted energies are extremely high compared to the Kerr black hole scenario. This distinct signature of the conformally transformed singular and regular black holes would be useful to distinguish them from the Kerr black hole in observation.

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Shadow thermodynamics of AdS black hole in regular spacetime

Cited by 6 publications

References 22 publications

Effects of a global monopole on the thermodynamic phase transition of a charged AdS black hole*

Effects of a global monopole on the thermodynamic phase transition of a charged AdS black hole*

Shadow thermodynamics of non-linear charged Anti-de Sitter black holes*

Rotational energy extraction from the Kerr black hole's mimickers

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