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Related papers: A Study on Charged Neutron Star in $AdS_5$

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In this paper, the thermodynamics and the stability of horizon of the charged AdS black hole surrounded by quintessence and cloud of strings in d-dimensional spacetime are studied via the scalar field scattering and the charged particle…

General Relativity and Quantum Cosmology · Physics 2021-03-16 Rui Yin , Jing Liang , Benrong Mu

We propose a method to create a star orbiting in an asymptotically AdS spacetime using the AdS/CFT correspondence. We demonstrate that by applying an appropriate source in the quantum field theory defined on a 2-sphere, the localized star…

High Energy Physics - Theory · Physics 2022-07-20 Youka Kaku , Keiju Murata , Jun Tsujimura

We obtain a charged accelerating AdS black hole solution in $f(R)$ gravity and investigate its thermodynamic behaviour. We consider low-acceleration black holes that do not have an acceleration horizon and obtain the first law of…

High Energy Physics - Theory · Physics 2019-11-06 Ming Zhang , Robert B. Mann

We investigate a simplified model for the strange stars in the framework of Finslerian spacetime geometry, composed of charged fluid. It is considered that the fluid consisting of three flavor quarks including a small amount of…

General Relativity and Quantum Cosmology · Physics 2021-06-22 Sourav Roy Chowdhury , Debabrata Deb , Saibal Ray , Farook Rahaman , B. K. Guha

Accretion disks around compact objects are expected to enter an unstable phase at high luminosity. One instability may occur when the radiation pressure generated by accretion modifies the disk viscosity, resulting in the cyclic depletion…

Black holes and weakly-magnetic accreting neutron stars show strong quasi-periodic variability over timescales that span a very wide range. This property offer us a unique opportunity to improve our understanding of basic physical processes…

Astrophysics · Physics 2009-10-31 Dimitrios Psaltis

We reconsider the study of critical behaviors of Kerr-Newman AdS black holes in four dimensions. The study is made in terms of the moduli space parameterized by the charge Q and the rotation parameter a, relating the mass M of the black…

High Energy Physics - Theory · Physics 2015-06-16 A. Belhaj , M. Chabab , H. El Moumni , L. Medari , M. B. Sedra

As is well known that RN-AdS black hole has a phase transition which is similar to that of van der Waals system. The phase transition depends on the electric potential of the black hole and is not the one between a large black hole and a…

General Relativity and Quantum Cosmology · Physics 2019-09-25 Xiong-Ying Guo , Huai-Fan Li , Li-Chun Zhang , Ren Zhao

We present the first systematic study of the gravitational collapse of rotating and magnetised neutron stars to charged and rotating (Kerr-Newman) black holes. In particular, we consider the collapse of magnetised and rotating neutron stars…

High Energy Astrophysical Phenomena · Physics 2017-05-10 Antonios Nathanail , Elias R. Most , Luciano Rezzolla

In this paper, we construct a new charged AdS black hole with modified cosmic Chaplygin gas (MCCG). In comparison to the previous model (modified Chaplygin AdS black hole) existed in the literature, we now have two new parameters: the…

General Relativity and Quantum Cosmology · Physics 2022-06-17 Ujjal Debnath , Behnam Pourhassan , Izzet Sakalli

The coevolution of supermassive black holes and their host galaxies represents a fundamental question in astrophysics. One approach to investigating this question involves comparing the star-formation rates (SFRs) of active galactic nuclei…

Astrophysics of Galaxies · Physics 2024-11-26 Bojun Zhang , Fan Zou , W. N. Brandt , Shifu Zhu , Nathan Cristello , Qingling Ni , Yongquan Xue , Zhibo Yu

We study the thermodynamic and gravitational stability of Kerr anti-de Sitter black holes in five and higher dimensions. We show, in the case of equal rotation parameters, $a_i=a$, that the Kerr-AdS background metrics become stable, both…

General Relativity and Quantum Cosmology · Physics 2010-11-19 Benedict M. N. Carter , Ishwaree P Neupane

As current and future experiments probe strong gravitational regimes around neutron stars and black holes, it is desirable to have theoretically sound alternatives to general relativity against which to test observations. Here we study the…

General Relativity and Quantum Cosmology · Physics 2014-11-18 Christopher Eling , Ted Jacobson , M. Coleman Miller

In this work we discuss charged rotating black holes in $AdS_5 \times S^5$ that degenerate to extremal black holes with zero entropy. These black holes have scaling properties between charge and angular momentum similar to those of Fermi…

High Energy Physics - Theory · Physics 2015-06-05 Micha Berkooz , Anna Frishman , Amir Zait

We consider the intermediate and end state behavior of the superradiantly perturbed Kerr black hole. Superradiant scattering in an asymptotically flat background is considered first. The case of a Kerr black hole in an Anti de-Sitter…

General Relativity and Quantum Cosmology · Physics 2017-04-05 Joseph Sullivan

The critical densities and impact of forming \D resonances in neutron stars are investigated within an extended nonlinear relativistic mean-field (RMF) model. The critical densities for the formation of four different charge states of \D…

Nuclear Theory · Physics 2015-07-08 Bao-Jun Cai , Farrukh J. Fattoyev , Bao-An Li , William G. Newton

In a previous work we constructed different families of stationary electrically charged Proca stars characterized by a charge parameter $q$, by solving the Einstein--Maxwell--Proca system in spherical symmetry, and imposing a harmonic time…

General Relativity and Quantum Cosmology · Physics 2026-03-02 Yahir Mio , Miguel Alcubierre

We investigate the cooling of neutron stars with relativistic and non-relativistic models of dense nuclear matter. We focus on the effects of uncertainties originated from the nuclear models, the composition of elements in the envelope…

Nuclear Theory · Physics 2017-02-21 Yeunhwan Lim , Chang Ho Hyun , Chang-Hwan Lee

We study the general relativistic collapse of neutron star (NS) models in spherical symmetry. Our initially stable models are driven to collapse by the addition of one of two things: an initially in-going velocity profile, or a shell of…

General Relativity and Quantum Cosmology · Physics 2016-02-17 Scott C. Noble , Matthew W. Choptuik

We derive the equation for pressure within a neutron star, taking into account a non-zero cosmological constant ($\Lambda$). We then examine the stability of the neutron star's equilibrium state in the presence of cosmological constant. Our…

General Relativity and Quantum Cosmology · Physics 2025-04-22 Naveen K. Singh , Gopal Kashyap