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The objective of this paper is to discuss anisotropic solutions representing static spherical self-gravitating systems in $f(R)$ theory. We employ the extended gravitational decoupling approach and transform temporal as well as radial…

广义相对论与量子宇宙学 · 物理学 2021-07-28 M. Sharif , Mariyah Aslam

Einstein field equations for anisotropic spheres are solved and exact interior solutions obtained. This paper extends earlier treatments to include anisotropic models which accommodate a wider variety of physically viable energy densities.…

广义相对论与量子宇宙学 · 物理学 2008-11-26 M. Chaisi , S. D. Maharaj

Recent advances in nuclear theory combined with new astrophysical observations have led to the need for specific theoretical models that actually apply to phenomena on dense-matter physics. At the same time, quantum chromodynamics (QCD)…

广义相对论与量子宇宙学 · 物理学 2022-08-30 Juan M. Z. Pretel , Takol Tangphati , Ayan Banerjee , Anirudh Pradhan

In this article, we explore some emerging properties of the stellar objects in the frame of the $f(R,T)$ gravity by employing the well-known Karmarkar condition, where $R$ and $T$ represent Ricci scalar and trace of energy momentum tensor…

广义相对论与量子宇宙学 · 物理学 2023-05-24 Zoya Asghar , M. Farasat Shamir , Ammara Usman , Adnan Malik

This paper deals with the theoretical modeling of anisotropic compact stars in the framework of $f(T)$ theory of gravity, where $T$ is torsion scalar. To this end, we have used the exact solutions of Krori and Barua metric to a static…

综合物理 · 物理学 2016-02-16 G. Abbas , Afshan Kanwal , M. Zubair

In the present study we search for a new stellar model with spherically symmetric matter and charged distribution under general relativistic framework. The model represents a compact star of embedding class one. The solutions obtain here…

广义相对论与量子宇宙学 · 物理学 2017-03-08 S. K. Maurya , Y. K. Gupta , Saibal Ray , Debabrata Deb

The charged anisotropic star on paraboloidal spacetime is reported by choosing particular form of radial pressure and electric field intensity. The non-singular solution of Einstein-Maxwell system of equation have been derived and it is…

广义相对论与量子宇宙学 · 物理学 2016-04-07 B. S. Ratanpal , Jaita Sharma

Our present study involves the strange stars model in the framework of $f(R,T)$ theory of gravitation. We have taken a linear function of the Ricci scalar $R$ and the trace $T$ of the stress-energy tensor $T_{\mu \nu}$ for the expression of…

广义相对论与量子宇宙学 · 物理学 2021-06-02 Pramit Rej , Piyali Bhar

We present a spherically symmetric solution of the general relativistic field equations in isotropic coordinates for charged fluid with pressure anisotropy, compatible with a super dense star modeling. Further, we have constructed an…

综合物理 · 物理学 2015-02-12 Ksh. Newton Singh , Narendra Pradhan , Manuel Malaver

This manuscript examines the compact stars in gravity $f (Q)$, where non-metricity $Q$ drives gravitational interactions. To achieve this goal, we consider a spherically symmetric spacetime with the anisotropic fluid distribution. In…

综合物理 · 物理学 2021-12-22 Sanjay Mandal , G. Mustafa , Zinnat Hassan , P. K. Sahoo

In this paper, we investigate anisotropic static spherically symmetric solutions in the framework of $f(\mathcal{G})$ gravity through gravitational decoupling approach. For this purpose, we consider Krori and Barua (known solution)…

广义相对论与量子宇宙学 · 物理学 2018-12-06 M. Sharif , Saadia Saba

This study explores the application of complexity factor within the context of Rastall gravity, exploring its implications on a static spacetime admitting spherical symmetry associated with anisotropic fluids under an electromagnetic field.…

广义相对论与量子宇宙学 · 物理学 2025-08-20 Tayyab Naseer

This work aims to identify some inhomogeneity factors for plane symmetric topology with anisotropic and dissipative fluid under the effects of both electromagnetic field as well as Palatini $f(R)$ gravity. We construct the modified field…

广义相对论与量子宇宙学 · 物理学 2016-05-12 M. Zaeem Ul Haq Bhatti , Z. Yousaf

In this paper, we have formulated the exact solutions of the non-static anisotropic gravitating source in $f(R,T)$ gravity which may lead to expansion and collapse. By assuming the no thermal conduction in gravitating source, we have…

广义相对论与量子宇宙学 · 物理学 2017-08-02 G. Abbas , Riaz Ahmed

This paper examines the general formalism and applications of isotropic as well as anisotropic polytropic stars in curvature-matter coupled gravity. For this purpose, we consider static spherical and Schwarzschild spacetimes in the interior…

广义相对论与量子宇宙学 · 物理学 2022-02-16 M. Sharif , Amal Majid , M. Shafaqat

In this paper, we consider isotropic solution and extend it to two different exact well-behaved spherical anisotropic solutions through minimal geometric deformation method in $f(R,T,R_{\rho\eta}T^{\rho\eta})$ gravity. We only deform the…

广义相对论与量子宇宙学 · 物理学 2024-04-03 Tayyab Naseer , M. Sharif

This manuscript is devoted to study the combined effect of a viable model, f(R) = R + \alpha R^n, and electromagnetic field on the instability range of gravitational collapse. We assume charged anisotropic fluid that dissipate energy via…

广义相对论与量子宇宙学 · 物理学 2014-02-03 H. Rizwana Kausar , Ifra Noureen

We perform a detailed physical analysis for a class of exact solutions for the Einstein-Maxwell equations. The linear equation of state consistent with quark stars has been incorporated in the model. The physical analysis of the exact…

广义相对论与量子宇宙学 · 物理学 2015-06-23 Jefta M. Sunzu , Sunil D. Maharaj , Subharthi Ray

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

The goal of this work is to develop physical models for spherically symmetric systems in the realm of $f(Q)$ gravity. The field equations are set up for anisotropic fluid and formulate these equations using physical ansatz of Vaidya-Tikekar…

广义相对论与量子宇宙学 · 物理学 2025-03-28 M. Awais , M. Azam