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Charged anisotropic decoupled compact objects in f(R) gravity
International Journal of Geometric Methods in Modern Physics ( IF 2.1 ) Pub Date : 2022-08-17 , DOI: 10.1142/s0219887822502231
M. Sharif 1 , Mariyah Aslam 1
Affiliation  

In this paper, we aim to formulate anisotropic solutions that represent charged self-gravitating static spheres in f(R) gravity. We introduce the effects of anisotropy in the domain of an isotropic solution by including an extra matter source. The spherical configuration is deformed by transforming radial as well as temporal metric functions. As a result of these transformations, the isotropic and anisotropic matter sources can be decoupled from each other. The system of field equations is disintegrated into two arrays such that the first set corresponds to the isotropic source while the second comprises the new gravitational source. The charged Krori–Barua spacetime is employed to specify the first set in the background of f(R) Starobinsky model. Two solutions of the other system are determined by incorporating a barotropic equation of state along with additional constraints on the anisotropic source. The matching conditions are imposed at the hypersurface to determine the values of unknown constants. Different features of the constructed models are inspected by using the mass and radius of Her X-I. One of the constructed solutions agrees with the viability and stability conditions for specific values of charge and the decoupling parameter.



中文翻译:

f(R) 引力中的带电各向异性解耦致密物体

在本文中,我们旨在制定代表带电自引力静态球体的各向异性解决方案F(R)重力。我们通过包含一个额外的物质源来介绍各向同性溶液域中各向异性的影响。球形配置通过变换径向和时间度量函数而变形。作为这些转换的结果,各向同性和各向异性物质源可以彼此解耦。场方程系统被分解成两个阵列,使得第一组对应于各向同性源,而第二组包含新的引力源。带电的 Krori–Barua 时空用于指定背景中的第一组F(R)斯塔罗宾斯基模型。另一个系统的两个解是通过结合正压状态方程以及对各向异性源的附加约束来确定的。匹配条件施加在超曲面上以确定未知常数的值。使用 Her XI 的质量和半径检查构建模型的不同特征。其中一个构造的解决方案与特定电荷值和去耦参数的可行性和稳定性条件一致。

更新日期:2022-08-17
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