Weakly charged compact stars in f(R) gravity

被引：16

作者：

Mansour, H. ^{[1
]}

Lakhal, B. Si ^{[2
]}

Yanallah, A. ^{[3
]}

机构：

[1] Blida Univ, Lab Phys Fondamentale & Appl, POB 270,Route Soumaa, Blida 09000, Algeria

[2] Natl Polytech Sch, Preparatory Classes Dept, 10 Hassen Badi St, Algiers 16200, Algeria

[3] Blida Univ, Fac Sci, Phys Dept, POB 270,Route Soumaa, Blida 09000, Algeria

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2018年 / 06期

关键词：

gravity; modified gravity; neutron stars; stars; NEUTRON-STARS; SPHERES; EQUATIONS; HISTORY; ENERGY; STATE;

D O I：

10.1088/1475-7516/2018/06/006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study electrically charged compact stars in the framework of one class of the extended theories of gravity (ETG), namely the f(R) gravity theory. We assume that the charge density is proportional to the energy density. The polytropic equation of state is chosen to describe the state of the charged perfect fluid. We aim to find the Oppenheimer Volkoff (OV) mass limit for charged compact stars. A detailed numerical study is performed. We show the dependence of the mass-radius diagram of the spheres on the values of the small parameter beta, the polytropic exponent gamma and the charge fraction a. Our results are compared with those found in the literature in the case of applying General Relativity (GR).

引用

页数：14

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