A Spherical Relativistic Anisotropic Compact Star Model

• 作者: Archana Sah Prakash Chandra Fulara
• 来源期刊: 天文学与天体物理学国际期刊(英文)
• 学科: 数学
• 关键词: ANISOTROPIC Fluid Distribution Non SINGULAR Solutions Einstein’s Field Equations Super DENSE Star General RELATIVITY
• 年，卷（期）: 2018,（1）
• 页码范围: 46-67
• 页数: 22页
• 分类号: O1

摘要

We provide solutions to Einsteins field equations for a model of a spherically symmetric anisotropic fluid distribution, relevant to the description of compact stars. The central matter-energy density, radial and tangential pressures, red shift and speed of sound are positive definite and are decreasing monotonically with increasing radial distance from the center of matter distribution of astrophysical object. The causality condition is satisfied for complete fluid distribution. The central value of anisotropy is zero and is increasing monotonically with increasing radial distance from the center of the distribution. The adiabatic index is increasing with increasing radius of spherical fluid distribution. The stability conditions in relativistic compact star are also discussed in our investigation. The solution is representing the realistic objects such as SAXJ1808.4-3658, HerX-1, 4U1538-52, LMC X-4, CenX-3, VelaX-1, PSRJ1614-2230 and PSRJ0348+0432 with suitable conditions.