具有二次状态方程的广义Tolman-Kuchowicz时空上的各向异性致密星

IF 1.8 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Hemani R. Acharya, Dishant M. Pandya, Bharatkumar B. Parekh, V. O. Thomas
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引用次数: 0

摘要

本文利用二次状态方程广义Tolman - Kuchowicz时空度量,给出了不带电静力球对称紧致物体PSR J0952-0607的爱因斯坦场方程的一类解。我们图解地得到了模型参数n的界,得到了致密天体数学模型的稳定恒星结构。用Tolman - Oppenheimer - Volkoff方程和harrison - zelovich - novikov判据检验了生成模型的稳定性。该各向异性致密星模型满足因果性条件、绝热指标、Buchdahl条件、Herrera开裂条件等所有稳定性判据,且不存在中心奇点。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Anisotropic compact stars on generalized Tolman-Kuchowicz spacetime with quadratic equation of state

This paper presents the class of solutions to the Einstein field equations for the uncharged static spherically symmetric compact object PSR J0952–0607 by using Generalized Tolman - Kuchowicz space-time metric with quadratic equation of state. We have obtained the bound on the model parameter n graphically and achieved the stable stellar structure of the mathematical model of a compact object. The stability of the generated model is examined by the Tolman - Oppenheimer - Volkoff equation and the Harrison-Zeldovich-Novikov criterion. This anisotropic compact star model fulfills all the required stability criteria including the causality condition, adiabatic index, Buchdahl condition, Herrera’s cracking condition, and pertains free from central singularities.

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来源期刊
Astrophysics and Space Science
Astrophysics and Space Science 地学天文-天文与天体物理
CiteScore
3.40
自引率
5.30%
发文量
106
审稿时长
2-4 weeks
期刊介绍: Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered. The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing. Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.
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