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In this paper, we investigate the energy problem in general relativity using approximate Lie symmetry methods for differential equations. This procedure is applied to Bardeen model (the regular black hole solution). Here we are forced to…

广义相对论与量子宇宙学 · 物理学 2011-09-08 M. Sharif , Saira Waheed

A model of nonlinear electrodynamics is proposed and investigated in general relativity. We consider the magnetic black hole and find a regular solution which gives corrections into the Reissner-Nordstr\"{o}m solution. At…

综合物理 · 物理学 2018-03-07 S. I. Kruglov

We propose a two-parameter, static and spherically symmetric regular geometry, which, for specific parameter values represents a regular black hole. The matter required to support such spacetimes within the framework of General Relativity…

广义相对论与量子宇宙学 · 物理学 2024-05-02 Anjan Kar , Sayan Kar

In this paper, we examine the effects of space noncommutativity on the thermodynamics of a Bardeen charged regular black hole. For a suitable choice of sets of parameters, the behavior of the singularity, horizon, mass function, black hole…

广义相对论与量子宇宙学 · 物理学 2015-05-30 M. Sharif , Wajiha Javed

Neves and Saa introduced a two parameter spacetime that includes the Hayward, Bardeen, and Simpson-Visser geometries as particular cases. In this work, we employ the generalized off-shell Helmholtz free energy method to investigate the…

广义相对论与量子宇宙学 · 物理学 2026-05-22 A. A. M. Silva , M. H. Macedo , R. R. Landim

In this study, we utilize the minimal geometric deformation technique of gravitational decoupling to extend the regular Bardeen black hole, leading to the derivation of new black hole solutions within the framework of Rastall theory. By…

广义相对论与量子宇宙学 · 物理学 2024-12-03 M. Sharif , and Malick Sallah

We study the thermodynamic stabilities of uncharged and charged black holes surrounded by quintessence (BHQ) by means of effective thermodynamic quantities. When the state parameter of quintessence $\omega_q$ is appropriately chosen, the…

广义相对论与量子宇宙学 · 物理学 2017-06-28 Meng-Sen Ma , Ren Zhao , Ya-Qin Ma

We study the thermodynamics of the recently-discovered non-extremal charged rotating black holes of gauged supergravities in five, seven and four dimensions, obtaining energies, angular momenta and charges that are consistent with the first…

高能物理 - 理论 · 物理学 2007-05-23 M. Cvetic , G. W. Gibbons , H. Lu , C. N. Pope

The most general electrically and magnetically charged rotating black hole solutions of 5 dimensional \KK\ theory are given in an explicit form. Various classical quantities associated with the black holes are derived. In particular, one…

高能物理 - 理论 · 物理学 2009-10-28 Dean Rasheed

We construct a new class of charged rotating solutions of $(n+1)$-dimensional Einstein-Born-Infeld gravity with cylindrical or toroidal horizons in the presence of cosmological constant and investigate their properties. These solutions are…

高能物理 - 理论 · 物理学 2008-11-26 M. H. Dehghani , H. R. Rastegar Sedehi

We present exact spherical black hole solutions in de Rham, Gabadadze and Tolley (dRGT) massive gravity for a generic choice of the parameters in the theory, and also discuss the thermodynamical and phase structure of the black hole in both…

广义相对论与量子宇宙学 · 物理学 2016-03-16 Sushant G. Ghosh , Lunchakorn Tannukij , Pitayuth Wongjun

In this paper, we construct a new class of charged rotating dilaton black brane solutions, with complete set of rotation parameters, which is coupled to a nonlinear Maxwell field. The Lagrangian of the matter field has the form of the…

广义相对论与量子宇宙学 · 物理学 2015-10-27 M. Kord Zangeneh , A. Sheykhi , M. H. Dehghani

By employing ray-tracing techniques, we investigate the shadow images of rotating Bardeen black holes surrounded by perfect fluid dark matter. In this work, two models are considered for the background light source, namely the celestial…

高能天体物理现象 · 物理学 2024-11-19 Ke-Jian He , Guo-Ping Li , Chen-Yu Yang , Xiao-Xiong Zeng

We discuss the first law of thermodynamics of Bardeen black hole. The presence of magnetic monopole charge modifies the energy and we define the temperature of the system accordingly. We introduce a lower cut-off to the space time by…

高能物理 - 理论 · 物理学 2020-03-27 Dharm Veer Singh , Sanjay Siwach

We study the thermodynamic properties of Schwarzschild-de Sitter (SdS) black hole and Reissner-Nordstr\"{o}m-de Sitter (RNdS) black hole in the view of global and effective thermodynamic quantities. Making use of the effective first law of…

高能物理 - 理论 · 物理学 2017-01-25 Huai-Fan Li , Meng-Sen Ma , Ya-Qin Ma

In this work, we start by examining a spherically symmetric black hole within the framework of non-commutative geometry and apply a modified Newman-Janis method to obtain a new rotating solution. We then investigate its consequences,…

广义相对论与量子宇宙学 · 物理学 2025-01-07 A. A. Araújo Filho , J. R. Nascimento , A. Yu. Petrov , P. J. Porfírio , Ali Övgün

We reconstruct a static and spherically symmetric black hole geometry originally proposed as an effective metric by identifying a consistent matter source derived from a fundamental action. The space-time is supported by a magnetically…

We compute the mass, angular momenta and charge of the Godel-type rotating black hole solution to 5 dimensional minimal supergravity. A generalized Smarr formula is derived and the first law of thermodynamics is verified. The computation…

高能物理 - 理论 · 物理学 2009-11-11 Glenn Barnich , Geoffrey Compere

We propose an analytic metric describing rotating black holes surrounded by generic dark matter halos. This metric is an exact solution of the field equations that incorporates a dark matter halo with a central density spike in the vicinity…

广义相对论与量子宇宙学 · 物理学 2026-05-18 Rui-Hong Yue , Yu-Qian Zhao , Wei-Liang Qian

In this work, we present an extensive analysis of the thermodynamics and holographic properties of three-dimensional C-metrics in the FG gauge, where we find that the free energy is equal to the Euclidean on-shell action with a generic…

高能物理 - 理论 · 物理学 2024-01-10 Jia Tian , Tengzhou Lai