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A study of charged stellar structure in modified f (R,ϕ,χ) gravity
International Journal of Geometric Methods in Modern Physics ( IF 1.8 ) Pub Date : 2022-07-15 , DOI: 10.1142/s0219887822501808
Adnan Malik 1 , Fatemah Mofarreh 2 , Akram Ali 1, 3 , Mah Rukh Hamid 1
Affiliation  

The aim of this paper is to investigate and analyze the behavior of charged compact stars in the modified f(R,ϕ,χ) theory of gravity. When solving the field equations, we assume that Krori– Barua space-time describes the geometry of the inner space [K. Krori and J. Barua, A singularity-free solution for a charged fluid sphere in general relativity, J. Phys. A Math. Gen. 8 (1975) 508]. We further analyzed various physical characteristics for our model, including energy density, pressure components, anisotropy parameter, mass function, compactness element, and redshift through their graphical representations. Additionally, we have checked the equilibrium position by taking Tolman–Oppenheimer–Volkoff equation and stability by using Abreu’s criterion [H. Abreu, H. Hernandez, and L. Nunez, Sound speeds, cracking and the stability of self-gravitating anisotropic compact objects, Class. Quantum Grav. 24 (2007) 4631] and relativistic adiabatic index. For our study, we choose Hercules XI, Centaurus XIII, EXO 1785-248, LMC XIV stars for analysis.



中文翻译:

修正f(R,φ,χ)引力下的带电恒星结构研究

本文的目的是调查和分析带电致密星在修正后的行为。F(R,φ,χ)引力理论。在求解场方程时,我们假设 Krori-Barua 时空描述了内部空间的几何形状 [K. Krori 和 J. Barua,广义相对论中带电流体球体的无奇点解,J. Phys。数学。8 (1975) 508] 我们通过图形表示进一步分析了模型的各种物理特性,包括能量密度、压力分量、各向异性参数、质量函数、致密性元素和红移。此外,我们通过采用 Tolman-Oppenheimer-Volkoff 方程来检查平衡位置,并使用 Abreu 准则 [H. Abreu、H. Hernandez 和 L. Nunez,声速、开裂和自引力各向异性致密物体的稳定性,类。量子引力 24 (2007) 4631] 和相对论绝热指数。对于我们的研究,我们选择 Hercules XI、Centaurus XIII、EXO 1785-248、LMC XIV 恒星进行分析。

更新日期:2022-07-15
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