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
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
收藏
页数:11
相关论文
共 50 条
  • [21] Effects of dark matter in star formation
    Arun, Kenath
    Gudennavar, S. B.
    Prasad, A.
    Sivaram, C.
    ASTROPHYSICS AND SPACE SCIENCE, 2019, 364 (02)
  • [22] Effects of dark matter on the nuclear and neutron star matter
    Das H.C.
    Kumar A.
    Kumar B.
    Biswal S.K.
    Nakatsukasa T.
    Li A.
    Patra S.K.
    Mon. Not. R. Astron. Soc., 2020, 4 (4893-4903): : 4893 - 4903
  • [23] Effects of dark matter on the nuclear and neutron star matter
    Das, H. C.
    Kumar, Ankit
    Kumar, Bharat
    Biswal, S. K.
    Nakatsukasa, Takashi
    Li, Ang
    Patra, S. K.
    MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2020, 495 (04) : 4893 - 4903
  • [24] Compact stars as dark matter probes
    Bertone, Gianfranco
    Fairbairn, Malcolm
    PHYSICAL REVIEW D, 2008, 77 (04):
  • [25] Capture of Dark Matter in Compact Stars
    Busoni, Giorgio
    PARTICLES AND NUCLEI INTERNATIONAL CONFERENCE 2021, PANIC2021, 2021,
  • [26] Compact dark objects in neutron star mergers
    Bauswein, Andreas
    Guo, Gang
    Lien, Jr-Hua
    Lin, Yen-Hsun
    Wu, Meng-Ru
    PHYSICAL REVIEW D, 2023, 107 (08)
  • [27] TEST OF THE EQUIVALENCE PRINCIPLE FOR ORDINARY MATTER FALLING TOWARD DARK MATTER
    SMITH, G
    ADELBERGER, EG
    HECKEL, BR
    SU, Y
    PHYSICAL REVIEW LETTERS, 1993, 70 (02) : 123 - 126
  • [28] Dark matter dynamical friction versus gravitational wave emission in the evolution of compact-star binaries
    Gomez, L. Gabriel
    Rueda, J. A.
    PHYSICAL REVIEW D, 2017, 96 (06)
  • [29] Dark matter admixed neutron star as a possible compact component in the GW190814 merger event
    Das, H. C.
    Kumar, Ankit
    Patra, S. K.
    PHYSICAL REVIEW D, 2021, 104 (06)
  • [30] Compact dark matter objects via N dark sectors
    Dvali, Gia
    Koutsangelas, Emmanouil
    Kuhnel, Florian
    PHYSICAL REVIEW D, 2020, 101 (08)