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相关论文: Anisotropic Dark Energy Stars within Vanishing Com…

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We investigate exotic stars composed of dark energy within the context of Einstein's General Relativity, by applying an extended Chaplygin gas equation-of-state. To account for anisotropies, we utilize a formalism based on the complexity…

广义相对论与量子宇宙学 · 物理学 2023-02-23 Á. Rincón , G. Panotopoulos , I. Lopes

A model of compact object coupled to inhomogeneous anisotropic dark energy is studied. It is assumed a variable dark energy that suffers a phase transition at a critical density. The anisotropic Lambda-Tolman-Oppenheimer-Volkoff equations…

广义相对论与量子宇宙学 · 物理学 2011-05-12 Cristian R. Ghezzi

By employing modified Chaplygin fluid prescription for the dark energy, we construct slowly rotating isotropic and anisotropic dark energy stars. The slow rotation is incorporated via general relativistic Hartle-Thorne formalism; whereas…

广义相对论与量子宇宙学 · 物理学 2024-07-26 O. P. Jyothilakshmi , Lakshmi J. Naik , V. Sreekanth

In this work, we have made a systematic study of how the gravitational wave frequency of the fundamental mode from compact stars is affected by anisotropic effects using realistic equations of state. Our study is an extension of the seminal…

广义相对论与量子宇宙学 · 物理学 2024-03-19 Elvis J. Aquino Curi , Luis B. Castro , Cesar V. Flores , César H. Lenzi

We study the non-radial $f$-mode oscillations of both isotropic and anisotropic dark energy stars by using the modified Chaplygin prescription of dark energy to model the stellar matter. The anisotropic pressure in the system is modeled…

广义相对论与量子宇宙学 · 物理学 2024-07-23 O. P. Jyothilakshmi , Lakshmi J. Naik , V. Sreekanth

We construct dark energy stars with Chaplygin-type equation of state (EoS) in the presence of anisotropic pressure within the framework of Einstein gravity. From the classification established by Iyer et al. [Class. Quantum Grav. 2, 219…

广义相对论与量子宇宙学 · 物理学 2023-01-18 Juan M. Z. Pretel

Within the framework of Einstein's General Relativity we study strange quark stars assuming an interacting equation-of-state. Taking into account the presence of anisotropies in a sphere made of ultra dense matter, we employ the formalism…

广义相对论与量子宇宙学 · 物理学 2023-03-09 Angel Rincon , Grigoris Panotopoulos , Ilidio Lopes

We propose a model for an anisotropic dark energy star where we assume that the radial pressure exerted on the system due to the presence of dark energy is proportional to the isotropic perfect fluid matter density. We discuss various…

广义相对论与量子宇宙学 · 物理学 2015-05-27 Farook Rahaman , Anil Kumar Yadav , Saibal Ray , Raju Maulick , Ranjan Sharma

We investigate, for the first time, universal relations for anisotropic dark energy stars. The stars are modeled with the modified Chaplygin equation of state and the Bowers-Liang prescription for anisotropy, and their global properties and…

广义相对论与量子宇宙学 · 物理学 2025-09-23 O. P. Jyothilakshmi , V. Sreekanth

In this work, we investigate the emergence of compact, anisotropic stellar structures through the gravitational decoupling scheme within the framework of complete geometric deformation. The study introduces a novel synthesis of two…

广义相对论与量子宇宙学 · 物理学 2025-12-09 Z. Yousaf , Kazuharu Bamba , M. Z. Bhatti , S. Khan

We have proposed a model for relativistic compact star with anisotropy and analytically obtained exact spherically symmetric solutions describing the interior of the dense star admitting non-static conformal symmetry. Several features of…

广义相对论与量子宇宙学 · 物理学 2016-04-27 Dibyendu Shee , Farook Rahaman , B. K. Guha , Saibal Ray

The presence of massive gravitons in the field of massive gravity is considered as an important factor in investigating the structure of compact objects. Hence, we are encouraged to study the dark energy star structure in the Vegh's massive…

广义相对论与量子宇宙学 · 物理学 2023-10-17 A. Bagheri Tudeshki , G. H. Bordbar , B. Eslam Panah

We investigate anisotropic compact stars comprising two non-interacting fluids: quark matter and condensed dark matter. Using the MIT Bag model equation of state for quark matter and Bose-Einstein Condensate equation of state for dark…

广义相对论与量子宇宙学 · 物理学 2025-05-28 G. Panotopoulos , A. Rincón , I. Lopes

In this work, we get an idea of the existence of compact stars in the background of f(T) modified gravity where T is a scalar torsion. We acquire the equations of motion using anisotropic property within the spherically compact star with…

综合物理 · 物理学 2019-11-26 Pameli Saha , Ujjal Debnath

We present a class of exact solutions of Einstein's gravitational field equations describing spherically symmetric and static anisotropic stellar type configurations. The solutions are obtained by assuming a particular form of the…

广义相对论与量子宇宙学 · 物理学 2009-11-07 M. K. Mak , T. Harko

The main aim of this study is to examine the behaviour of physical parameters of an anisotropic compact star model demonstrating spherical symmetry in F(Q) modified gravity. To evaluate the behaviour and the stability of an anisotropic…

广义相对论与量子宇宙学 · 物理学 2025-05-26 Sat Paul , Jitendra Kumar , S. K. Maurya

The literature suggests that dark energy is responsible for the accelerating expansion of the universe due to its negative pressure, therefore, dark energy can be used as a possible option to prevent the gravitational collapse of compact…

广义相对论与量子宇宙学 · 物理学 2025-08-18 Susmita Sarkar , Nayan Sarkar

This paper presents the study of dark-energy compact stars in the context of modified Rastall teleparallel gravity. It is the first time that dark energy celestial phenomena have been explored in this modified gravitational theory.…

广义相对论与量子宇宙学 · 物理学 2025-07-03 Allah Ditta , Xia Tiecheng , G. Mustafa , Değer Sofuoğlu , Asif Mahmood

Within the metric formalism of $f(R)$ theories of gravity, where $R$ is the Ricci scalar, we study the hydrostatic equilibrium structure of compact stars with the inclusion of anisotropic pressure. In particular, we focus on the $f(R)=…

广义相对论与量子宇宙学 · 物理学 2022-07-11 Juan M. Z. Pretel , Sergio B. Duarte

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
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