Model of compact star with ordinary and dark matter

被引：7

作者：

Mafa Takisa, P. ^{[1
]}

Leeuw, L. L. ^{[2
]}

Maharaj, S. D. ^{[3
]}

机构：

[1] Univ South Africa, Sch Phys, Sci Engn & Technol, Florida Sci Campus,POB 392, ZA-0003 Unisa, South Africa

[2] Univ Western Cape, Dept Phys & Astron, ZA-7535 Bellville, South Africa

[3] Univ KwaZulu Natal, Sch Math Stat & Comp Sci, Astrophys Res Ctr, Private Bag X54001, ZA-4000 Durban, South Africa

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2020年 / 365卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

Einstein equations; Compact stars; Equation of state; ANISOTROPIC SPHERES; STRANGE STARS; NEUTRON-STARS; INSTABILITY; DENSITY;

D O I：

10.1007/s10509-020-03878-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study compact stars formed by dark and ordinary matter, with attributes of both neutron star matter and quark star matter. We assume an equation of state for dark matter which is consistent with the rotational curves of galaxies and for color-flavor-locked (CFL) distributions for ordinary matter. This is done in the curved Krori-Barua spacetime geometry in general relativity. We find new exact solutions of dark matter admixed compact objects, with maximum mass 2.67 M-circle dot and radius around 11.16 km, with 52.40% of dark matter content. By varying the dark matter ratio, we obtain the masses of dark compact stars with masses less than 2.67 M-circle dot.

引用

页数：11