Some analytic models of relativistic compact stars

被引：30

作者：

Singh, K. N. ^{[1
]}

Pant, N. ^{[2
]}

Govender, M. ^{[3
]}

机构：

[1] Natl Def Acad, Dept Phys, Pune 411023, Maharashtra, India

[2] Natl Def Acad, Dept Math, Pune 411023, Maharashtra, India

[3] Durban Univ Technol, Fac Sci Appl, Dept Math, Durban, South Africa

来源：

INDIAN JOURNAL OF PHYSICS | 2016年 / 90卷 / 11期

关键词：

General relativity; Exact solutions; Cold star; Anisotropy; GENERAL-RELATIVITY; FLUID SPHERES; ANISOTROPIC FLUID; RADIATING STAR; NEUTRON-STAR; STABILITY; OBJECTS; DISTRIBUTIONS; CONTRACTION; SYSTEMS;

D O I：

10.1007/s12648-016-0870-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present charged anisotropic Durgapal IV interior solutions of the general relativistic field equations in curvature coordinates. These exact solutions can be used to model stable and well-behaved compact stars. Using these solutions we have presented models of well-known neutron and quark stars such as PSR J1903+0327, RX-J1856.5-3754, PSR B1913+16, PSR J0737-3039A and Cyg X-2. The equation of state (EoS) corresponding to the modeled objects are studied using their compression moduli. According to our solutions it is found that the EoS for Cyg X-2 (neutron star) is stiffer than any other object presented and therefore more massive. Furthermore, the EoS for RX J1856.5-3754 (Quark star) is the softest one, rendering it least massive. These solutions satisfy all the energy conditions. Finally, all our presented stellar models satisfy the equilibrium condition of Cooperstock and de la Cruz i.e. M-2 > Q(2).

引用

页码：1215 / 1223

页数：9

共 57 条

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