各向同性球体在拉斯塔尔引力中的杜尔加帕尔-富洛里亚模型的作用

IF 2.1 4区 物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS
Arfa Waseem, Sunaiha Naeem
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引用次数: 0

摘要

本研究涉及拉斯托尔参数对各向同性紧凑恒星物理行为的影响。为此,考虑了静态球对称和完美流体分布。为了研究一些特殊紧凑星模型的各个方面,考虑了杜尔加帕尔-富洛里亚度量函数。Durgapal-Fuloria 度量函数中涉及的未知参数是通过与观测到的几个特定恒星天体的质量和半径选择相匹配的约束条件计算出来的。通过对物质含量、能量约束、状态方程因子、质量成分、因果关系条件和拉斯托尔参数特定值的恒星方程的图形描述,检验了认可函数的可行性。结果表明,所研究的恒星表现出稳定的结构,与该框架中的杜尔加帕尔-富罗里亚公势相对应。此外,研究还表明,当 Rastall 因子等于零时,可以实现相对论的一般结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Role of Durgapal-Fuloria model on isotropic spheres in Rastall gravity

Role of Durgapal-Fuloria model on isotropic spheres in Rastall gravity

This research deals with the impacts of Rastall parameter on the physical behavior of isotropic compact stars. For this purpose, the static spherically symmetric as well as perfect fluid distribution are taking into account. To examine the various aspects of some particular compact star models, the Durgapal-Fuloria metric functions are considered. The unknown parameters involved in Durgapal-Fuloria metric functions are computed via matching constraints with observed choices of masses and radii of few particular stellar objects. The viability of the endorsed functions is inspected through the graphical description of matter contents, energy constraints, equation of state factor, mass constituents, causality condition and stellar equation for certain values of Rastall parameter. It is determined that the stars under consideration manifest stable structures corresponding to Durgapal-Fuloria metric potentials in this framework. Further, it is exhibited that for Rastall factor equals to zero, the general results of theory of relativity can be achieved.

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来源期刊
General Relativity and Gravitation
General Relativity and Gravitation 物理-天文与天体物理
CiteScore
4.60
自引率
3.60%
发文量
136
审稿时长
3 months
期刊介绍: General Relativity and Gravitation is a journal devoted to all aspects of modern gravitational science, and published under the auspices of the International Society on General Relativity and Gravitation. It welcomes in particular original articles on the following topics of current research: Analytical general relativity, including its interface with geometrical analysis Numerical relativity Theoretical and observational cosmology Relativistic astrophysics Gravitational waves: data analysis, astrophysical sources and detector science Extensions of general relativity Supergravity Gravitational aspects of string theory and its extensions Quantum gravity: canonical approaches, in particular loop quantum gravity, and path integral approaches, in particular spin foams, Regge calculus and dynamical triangulations Quantum field theory in curved spacetime Non-commutative geometry and gravitation Experimental gravity, in particular tests of general relativity The journal publishes articles on all theoretical and experimental aspects of modern general relativity and gravitation, as well as book reviews and historical articles of special interest.
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