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相关论文: Charged compact stellar model in Finch-Skea spacet…

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Current study highlights the physical characteristics of charged anisotropic compact stars by exploring some exact solutions of modified field equations in $f(R,G)$ gravity. A comprehensive analysis is performed from the obtained solutions…

广义相对论与量子宇宙学 · 物理学 2018-06-13 M. Farasat Shamir , Saeeda Zia

In this current study, our main focus is to model a specific charged compact star SAX J 1808.4-3658 (M = 0.88 $M_{\odot}$,\, R = 8.9 km) within the realm of $f(R,\,T)$ modified gravity theory using the metric potentials proposed by…

广义相对论与量子宇宙学 · 物理学 2021-06-01 Pramit Rej , Piyali Bhar , Megan Govender

We develop a static charged stellar model in $f(R,T)$ gravity where the modification is assumed to be linear in $T$ which is the trace of the energy momentum tensor. The exterior spacetime of the charged object is described by the…

广义相对论与量子宇宙学 · 物理学 2023-11-07 Soumik Bhattacharya , Ranjan Sharma , Sunil D. Maharaj

We provide the modified TOV equations for the hydrostatic equilibrium of charged compact stars within the metric $f(R)$ gravitational background. We adopt the MIT bag model EoS for the dense matter and assume a charge distribution where the…

广义相对论与量子宇宙学 · 物理学 2022-09-23 Juan M. Z. Pretel , José D. V. Arbañil , Sergio B. Duarte , Sergio E. Jorás , Ribamar R. R. Reis

In the present article authors investigate the anisotropic stellar solutions admitting Finch-Skea symmetry (viable and non-singular metric potentials) in the presence of some exotic matter fields, such as: Bose-Einstein Condensate (BEC)…

广义相对论与量子宇宙学 · 物理学 2022-11-04 Oleksii Sokoliuk , Alexander Baransky , P. K. Sahoo

In this study, we investigate the features of a charged gravastar within the framework of $f(\mathbb{Q})$ gravity ($\mathbb{Q}$ represents non-metricity) using the Finch-Skea metric. This metric is applied to both the interior and shell…

广义相对论与量子宇宙学 · 物理学 2025-03-11 M. Sharif , Madiha Ajmal

This manuscript explores the compact geometries by employing Karmarkar condition with the charged anisotropic source of matter distribution. For this purpose, we consider an explicit model by indulging $\mathrm{g}_{rr}$ metric potential…

广义相对论与量子宇宙学 · 物理学 2021-05-05 M. Farasat Shamir , G. Mustafa , Mushtaq Ahmad

In this work, we explore a class of compact charged spheres that have been tested against experimental and observational constraints with some known compact stars candidates. The study is performed by considering the self-gravitating,…

综合物理 · 物理学 2018-08-01 Jitendra Kumar , Amit Kumar Prasad , S. K. Maurya , Ayan Banerjee

The equation of state provided by effective models of strongly interacting matter should comply with the restrictions imposed by current astrophysical observations of compact stars. Using the equation of state given by the (axial-)vector…

高能物理 - 唯象学 · 物理学 2019-07-19 János Takátsy , Péter Kovács , Zsolt Szép , György Wolf

We present a new class of solutions to the Einstein's field equations corresponding to a static spherically symmetric anisotropic system by generalizing the ansatz of Finch and Skea [Class. Quantum Grav. 6 (1989) 467] for the gravitational…

综合物理 · 物理学 2014-11-24 D. M. Pandya , V. O. Thomas , R. Sharma

This paper is devoted to the study of stellar evolution of compact objects whose energy density and pressure of the fluid are interlinked by means of MIT bag model and a realistic polytropic equation of state in the scenario of $f(R,T,Q)$…

广义相对论与量子宇宙学 · 物理学 2019-04-15 M. Sharif , Arfa Waseem

In this exposition, we seek solutions of the Einstein-Maxwell field equations in the presence of a massive scalar field cast in the Brans-Dicke (BD) formalism which describes charged anisotropic strange stars. The interior spacetime is…

广义相对论与量子宇宙学 · 物理学 2020-12-08 S. K. Maurya , Ksh. Newton Singh , M. Govender , Abdelghani Errehymy

This article primarily investigates the existence of the charged compact star under the conformal motion treatment within the context of f(Q) gravity. We have developed two models by implementing the power-law and linear form of conformal…

广义相对论与量子宇宙学 · 物理学 2024-04-02 Sneha Pradhan , P. K. Sahoo

In this paper, we study the viability and stability of anisotropic compact stars in the context of $f(\mathcal{Q})$ theory, where $\mathcal{Q}$ is non-metricity scalar. We use Finch-Skea solutions to investigate the physical properties of…

广义相对论与量子宇宙学 · 物理学 2024-01-18 Muhammad Zeeshan Gul , Shamaila Rani , Muhammad Adeel , Abdul Jawad

This paper aims to explore a class of static stellar equilibrium configuration of relativistic charged spheres made of a charged perfect fluid. Solving the Einstein-Maxwell field equations, we consider a particularized metric potential,…

广义相对论与量子宇宙学 · 物理学 2021-05-11 J. Kumar , S. K. Maurya , A. K. Prasad , Ayan Banerjee

We study the effect of electric charge in compact stars assuming that the charge distribution is proportional to the mass density. The pressure and the density of the matter inside the stars are large, and the gravitational field is…

天体物理学 · 物理学 2009-11-10 Subharthi Ray , Aquino L. Espindola , Manuel Malheiro , Jose' P. S. Lemos , Vilson T. Zanchin

This paper's main aim is to investigate the existence of a new classification of embedded class-I solutions of compact stars, by using Karmarkar condition in $f(R)$ gravity background. To achieve that goal, we consider two different models…

广义相对论与量子宇宙学 · 物理学 2021-05-07 Tayyaba Naz , Ammara Usman , M. Farasat Shamir

This paper studies the structural formation of various spherically symmetric anisotropic configured stars in $f(\mathcal{R},\mathcal{T},\mathcal{Q})$ gravity under the influence of electromagnetic field, where…

广义相对论与量子宇宙学 · 物理学 2023-07-24 M. Sharif , Tayyab Naseer

We find new exact solutions to the Einstein-Maxwell field equations which are relevant in the description of highly compact stellar objects. The relativistic star is charged and anisotropic with a quark equation of state. Exact solutions of…

广义相对论与量子宇宙学 · 物理学 2017-01-04 D. Kileba Matondo , S. D. Maharaj

A class of solutions of Einstein field equations satisfying Karmarkar embedding condition is presented which could describe static, spherical fluid configurations, and could serve as models for compact stars. The fluid under consideration…

广义相对论与量子宇宙学 · 物理学 2021-03-24 Lipi Baskey , Shyam Das , Farook Rahaman