f(1,𝒯2)理论对稳定Finch-Skea gravastar模型的影响

IF 1.6 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
M. Sharif, Saba Naz
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引用次数: 0

摘要

本文在[公式:见原文]理论的背景下研究了引力真空星(又称引力星)的结构。这个假设的物体可以被视为黑洞的替代品,它有三个区域:(i)内部区域,(ii)内壳和(iii)外部区域。我们使用Finch-Skea度量来考察这些几何图形的径向度量分量以及特定的[公式:见文本]模型。我们确定了内域和薄壳域的无奇点解。通过Israel匹配约束实现了内部区域与外部史瓦西时空的平滑匹配。最后,我们研究了重力星域的各种特性,包括状态方程参数、固有长度、熵、能量和表面红移。从这种引力的角度来看,致密的引力星结构是黑洞的可行替代物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of f(ℜ,𝒯2) theory on stable Finch–Skea gravastar model
This paper examines the structure of a gravitational vacuum star (also known as gravastar) in the background of [Formula: see text] theory. This hypothetical object can be treated as a substitute of a black hole, with three regions: (i) the internal region, (ii) the intrinsic shell and (iii) the outer region. We examine these geometries using Finch–Skea metric for the radial metric component along with the particular [Formula: see text] model. We determine singularity-free solutions for both the inner as well as thin-shell domains. The smooth matching of the interior region with external Schwarzschild spacetime is obtained through Israel matching constraints. Finally, we study various characteristics of gravastar domains including the equation-of-state parameter, proper length, entropy, energy as well as surface redshift. It is found that the compact gravastar structure is a viable alternate to the black hole in the perspective of this gravity.
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来源期刊
Modern Physics Letters A
Modern Physics Letters A 物理-物理:核物理
CiteScore
3.10
自引率
7.10%
发文量
186
审稿时长
3 months
期刊介绍: This letters journal, launched in 1986, consists of research papers covering current research developments in Gravitation, Cosmology, Astrophysics, Nuclear Physics, Particles and Fields, Accelerator physics, and Quantum Information. A Brief Review section has also been initiated with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.
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