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相关论文: Relativistic strange stars in Tolman-Kuchowicz spa…

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In the current article, we study anisotropic spherically symmetric strange star under the background of $f(R,T)$ gravity using the metric potentials of Tolman-Kuchowicz type~\cite{Tolman1939,Kuchowicz1968} as $\lambda(r)=\ln(1+ar^2+br^4)$…

广义相对论与量子宇宙学 · 物理学 2020-06-03 Suparna Biswas , Dibyendu Shee , B. K. Guha , Saibal Ray

We attempt to study a singularity-free model for the spherically symmetric anisotropic strange stars under Einstein's general theory of relativity by exploiting the Tolman-Kuchowicz metric. Further, we have assumed that the cosmological…

广义相对论与量子宇宙学 · 物理学 2018-10-03 M. K. Jasim , Debabrata Deb , Saibal Ray , Y. K. Gupta , Sourav Roy Chowdhury

In this paper we present a strange stellar model using Tolman $V$ type metric potential employing simplest form of the MIT bag equation of state (EOS) for the quark matter. We consider that the stellar system is spherically symmetric,…

广义相对论与量子宇宙学 · 物理学 2018-08-08 Dibyendu Shee , Debabrata Deb , Shounak Ghosh , Saibal Ray , B. k. Guha

This paper deals with the existence of a compact stellar object, precisely strange (quark) star, in the framework of Einstein's General Theory of Relativity with Tolman $V$ metric potential, which is one of the simplest forms of potential…

广义相对论与量子宇宙学 · 物理学 2020-04-23 Saibal Ray , Dibyendu Shee , Debabrata Deb , S. K. Maurya , M. K. Jasim

The purpose of our present work is to investigate some new features of a static anisotropic relativistic hybrid compact star composed of strange quark matter (SQM) in the inner core and normal baryonic matter distribution in the crust. Here…

广义相对论与量子宇宙学 · 物理学 2024-03-21 Pramit Rej , Piyali Bhar

In this article we try to present spherically symmetric isotropic strange star model under the framework of $f(R,\mathcal{T})$ theory of gravity. To this end, we consider that the Lagrangian density is an arbitrary linear function of the…

广义相对论与量子宇宙学 · 物理学 2018-04-23 Debabrata Deb , Farook Rahaman , Saibal Ray , B. K. Guha

We propose a spherically symmetric and anisotropic model for strange quark stars within the framework of MIT Bag model. Though the model is found to comply with all the physical requirements of a realistic star satisfying a strange matter…

广义相对论与量子宇宙学 · 物理学 2017-11-20 Mehedi Kalam , Anisul Ain Usmani , Farook Rahaman , Sk. Monowar Hossein , Indrani Karar , Ranjan Sharma

The concept of dark energy can be used as a possible option to prevent the gravitational collapse of compact objects into singularities. It affects the universe on the largest scale, as it is responsible for our universe's accelerated…

广义相对论与量子宇宙学 · 物理学 2023-08-15 Pramit Rej , Akashdip Karmakar

In this paper, we study the physical characteristics of anisotropic spherically symmetric quark star candidates for $R+2\sigma T$ gravity model, where $R$, $\sigma$ and $T$ depict scalar curvature, coupling parameter, and the trace of the…

广义相对论与量子宇宙学 · 物理学 2020-01-08 M. Sharif , Arfa Waseem

In this article, we attempt to find a singularity free solution of Einstein's field equations for compact stellar objects, precisely strange (quark) stars, considering Schwarzschild metric as the exterior spacetime. To this end, we consider…

广义相对论与量子宇宙学 · 物理学 2017-10-19 Debabrata Deb , Sourav Roy Chowdhury , Saibal Ray , Farook Rahaman , B. K. Guha

Alternative gravity theory is currently an incredibly significant technique for addressing some enduring experimental difficulties, such as the universe's dark region. They may also be employed in celestial cosmology, producing results that…

广义相对论与量子宇宙学 · 物理学 2024-05-01 Tayyaba Naz , Adnan Malik , Zenab Ramay

This paper is devoted to explore some relativistic configurations of stellar objects for static spherically symmetric structures in the context of modified $f(\mathcal{G})$ gravity, by exploiting the Tolman-Kuchowicz spacetime [1,2]. We…

广义相对论与量子宇宙学 · 物理学 2020-01-23 M. Farasat Shamir , Tayyaba Naz

We study strange stars in the framework of $f\left(R,\mathcal{T}\right)$ theory of gravity where the strange quark matter distribution inside the stellar system is governed by the phenomenological MIT Bag model equation of state (EOS).…

综合物理 · 物理学 2018-04-24 Debabrata Deb , Farook Rahaman , Saibal Ray , B. K. Guha

This study explores the structural formation of various spherically symmetric anisotropic stars within the framework of Rastall theory. To achieve this, we derive modified field equations which are then resolved using the Finch-Skea ansatz,…

广义相对论与量子宇宙学 · 物理学 2025-06-05 Malick Sallah , M. Sharif

Employing $f(T)$ gravity, where $T$ is the torson, we have developed a new model of an anisotropic compact star in this work. Tolman-Kuchowicz (TK) metric potential has been used to solve the set of field equations. Furthermore, the…

广义相对论与量子宇宙学 · 物理学 2023-04-12 Piyali Bhar

In the present paper, we report on a study of the anisotropic strange stars under Finsler geometry. Keeping in mind that Finsler spacetime is not merely a generalization of Riemannian geometry rather the main idea is the projectivized…

广义相对论与量子宇宙学 · 物理学 2020-03-18 Sourav Roy Chowdhury , Debabrata Deb , Farook Rahaman , Saibal Ray , B. K. Guha

We study a specific model of anisotropic strange stars in the modified $f\left(R,\mathcal{T}\right)$-type gravity by deriving solutions to the modified Einstein field equations representing a spherically symmetric anisotropic stellar…

广义相对论与量子宇宙学 · 物理学 2019-05-01 Debabrata Deb , Sergei V. Ketov , S. K. Maurya , Maxim Khlopov , P. H. R. S. Moraes , Saibal Ray

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 investigate a compact spherically symmetric relativistic body with anisotropic particle pressure profiles. The distribution possesses characteristics relevant to modeling compact stars within the framework of general relativity. For this…

广义相对论与量子宇宙学 · 物理学 2018-02-28 S. K. Maurya , Ayan Banerjee , Sudan Hansraj

The influence of the anisotropy in the equilibrium and stability of strange stars is investigated through the numerical solution of the hydrostatic equilibrium equation and the radial oscillation equation, both modified from their original…

高能天体物理现象 · 物理学 2017-06-30 José D. V. Arbañil , M. Malheiro
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