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arXiv 2008.04816gr-qc
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$f(R)$引力中各向异性恒星模型的Finch-Skea解

Finch-Skea Solutions of Anisotropic Stellar Models in $f(R)$ Gravity

B. Thakore, R. Goti, S. Shah, H. Pandya, D. M. Pandya

摘要:

本文在$f(R)$重力框架下讨论致密天体的组成和模型。该模型适用于各种观测到的奇异星,SMC X-1、SAX J1808.4-3658、Swift J1818.0-1607、PSR J1614-2230和PSR J0348+0432。通过设置合适的无量纲耦合参数$λ$,得到了密度、径向压力和切向压力等物理参数。在不假定任何状态方程的情况下,质量-半径关系足以容纳所有太阳质量接近2.5的奇异星。该模型的物理可行性检查所有上述恒星,它被发现,所有的规则性和稳定性条件得到满足。

英文摘要:

Present paper deals with the composition and modelling of compact dense astrophysical bodies under the framework of $f(R)$ gravity. The model is employed on various observed strange stars viz., SMC X-1, SAX J1808.4-3658, Swift J1818.0-1607, PSR J1614-2230 and PSR J0348+0432. Upon setting the appropriate value of dimensionless coupling parameter $λ$, the physical parameters such as the density, the radial and tangential pressures were obtained. Mass-Radius relation without presuming any equation of state is capable enough to accommodate all strange stars nearly having solar mass up to 2.5. The physical viability of the model is examined for all the aforementioned stars and it is found that all the regularity and stability conditions are satisfied.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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