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Related papers: Testing of K(R,T)-gravity through gravastar config…

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In this work, we discuss the configuration of a gravastar (gravitational vacuum stars) in the context of $f(R, \,T )$ gravity by employing the Mazur-Mottola conjecture [P. Mazur and E. Mottola, Report No. LA-UR-01-5067; P. Mazur and E.…

General Relativity and Quantum Cosmology · Physics 2021-08-26 Piyali Bhar , Pramit Rej

We propose a stellar model under the $f(\mathbb{T},\mathcal{T})$ gravity following Mazur-Mottola's conjecture [Mazur (2001), Mazur (2004)] known as gravastar which is generally believed as a viable alternative to black hole. The gravastar…

General Relativity and Quantum Cosmology · Physics 2020-03-09 Shounak Ghosh , A. D. Kanfon , Amit Das , M. J. S. Houndjo , I. G. Salako , Saibal Ray

In the last few decades, gravastars have been proposed as an alternative to black holes. The stability of the gravastar has been studied in many modified theories of gravity along with Einstein's GR. The $f(Q,T)$ gravity, a successfully…

General Relativity and Quantum Cosmology · Physics 2023-08-09 Sneha Pradhan , Debasmita Mohanty , P. K. Sahoo

We propose a unique stellar model under the $f(R,\mathcal{T})$ gravity by using the conjecture of Mazur-Mottola [P. Mazur and E. Mottola, Report number: LA-UR-01-5067., P. Mazur and E. Mottola, Proc. Natl. Acad. Sci. USA 101, 9545 (2004)]…

General Relativity and Quantum Cosmology · Physics 2017-06-14 Amit Das , Shounak Ghosh , B. K. Guha , Swapan Das , Farook Rahaman , Saibal Ray

In the present paper we propose a stellar model under the $f(\mathbb{T})$ gravity following the conjecture of Mazur-Mottola~[Report number: LA-UR-01-5067 (2001); Proc. Natl. Acad. Sci. USA 101 (2004) 9545] known in literature as {\it…

General Relativity and Quantum Cosmology · Physics 2020-03-25 Amit Das , Shounak Ghosh , Debabrata Deb , Farook Rahaman , Saibal Ray

Gravastars have been considered as a feasible alternative to black holes in the past couple of decades. Stable models of gravastar have been studied in many of the alternative gravity theories besides standard General Relativity (GR). The…

General Relativity and Quantum Cosmology · Physics 2021-07-14 Shounak Ghosh , Sagar Dey , Amit Das , Anirban Chanda , B C Paul

This manuscript explores the gravastar model in the $f(R,\Sigma,T)$ gravity framework, with the help of Kuchowicz metric funcition, offering an alternative to black holes. A gravastar has three regions: interior, intermediate shell, and…

General Relativity and Quantum Cosmology · Physics 2025-09-05 Bharat Singh , S. Surendra Singh

This work proposes a stellar model under Gauss-Bonnet $f(\mathcal{G}, T)$ gravity with the conjecture theorised by Mazur and Mottola, well known as the gravitational vacuum stars (gravastars). By taking into account the $f(\mathcal{G},T)$…

General Relativity and Quantum Cosmology · Physics 2018-05-24 M. Farasat Shamir , Mushtaq Ahmad

This paper studies the effects of charge on a peculiar stellar object, recognized as gravastar, under the influence of $f(R,T)$ gravity by considering the conjecture of Mazur and Mottola in general relativity. The gravastar is also known as…

General Relativity and Quantum Cosmology · Physics 2019-11-27 M. Sharif , Arfa Waseem

This paper investigates the influence of charge on physical features of gravastars in the framework of energy-momentum squared gravity. A gravastar is an alternate model to a black hole that comprises of three distinct regions, namely the…

General Relativity and Quantum Cosmology · Physics 2022-04-06 M. Sharif , Saba Naz

In this paper, we analyze a few physical characteristics of gravastar with cylindrical geometry in $f(R,T)$ theory, where $R$ is the Ricci scalar and $T$ is the trace of energy-momentum tensor. The gravastar is generally considered to be a…

General Relativity and Quantum Cosmology · Physics 2021-07-05 Z. Yousaf , Kazuharu Bamba , M. Z. Bhatti

This work is devoted to study the analytical and regular solutions of a particular self-gravitating object (i.e., gravastar) in a particular theory of gravity. We derive the corresponding field equations in the presence of effective energy…

General Relativity and Quantum Cosmology · Physics 2021-08-30 Z. Yousaf , M. Z. Bhatti , H. Asad

This paper investigates the gravastar model as a potential alternative to black holes, utilizing the Kuchowicz metric in the context of Rastall gravity. The model comprises three distinct regions: an interior with positive energy density…

General Relativity and Quantum Cosmology · Physics 2025-09-25 Tayyab Naseer , M. Sharif , Areej Tabassum

In the current research, we present a novel gravastar model based on the Mazur-Mottola (2004) method with an isotropic matter distribution in $f(Q)$ gravity. The gravastar, a hypothesized substitute for a black hole, is built using the…

General Relativity and Quantum Cosmology · Physics 2023-04-12 Sneha Pradhan , Sanjay Mandal , P. K. Sahoo

This paper discusses the configuration of gravitational vacuum star or gravastar with the impact of geometry and matter coupling present in $f(R,T)$ gravity. The gravastar is also conceptualized as a substitute for a black hole which is…

General Relativity and Quantum Cosmology · Physics 2020-12-07 M. Sharif , Arfa Waseem

In this paper, we discuss some feasible features of gravastar that were firstly demonstrated by Mazur and Mottola. It is already established that gravastar associates the de-Sitter spacetime in its inner sector with the Schwarzschild…

General Relativity and Quantum Cosmology · Physics 2020-05-05 M. Z. Bhatti , Z. Yousaf , A. Rehman

Mazur and Mottola's gravastar model represents one of the few serious alternatives to the traditional understanding of the black hole. The gravastar is typically regarded as a theoretical alternative for the black hole. This article…

General Physics · Physics 2025-02-18 Meghanil Sinha , S. Surendra Singh

Gravastars, theoretical alternatives to black holes, have captured the interest of scientists in astrophysics due to their unique properties. This paper aims to further investigate the exact solution of a novel gravastar model based on the…

General Relativity and Quantum Cosmology · Physics 2024-05-01 Faisal Javed , Ji Lin

Gravastars are considered as one of the prime exotic type compact objects which may be found at the end state of gravitational collapse of massive stars with a view to resolve the complexities that are pertinent in case of a black hole…

General Relativity and Quantum Cosmology · Physics 2024-08-22 Debadri Bhattacharjee , Pradip Kumar Chattopadhyay

This paper examines the structure of a gravitationally vacuum star (also known as gravastar) in the background of ${f}(\Re,\mathcal{T}^{2})$ theory. This hypothetical object can be treated as a substitute of a black hole, with three…

General Relativity and Quantum Cosmology · Physics 2025-09-16 M. Sharif , Saba Naz
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