Bosonic dark matter in neutron stars and its effect on gravitational wave signal

被引：104

作者：

Karkevandi, Davood Rafiei ^{[2
]}

Shakeri, Soroush ^{[1
,2
]}

Sagun, Violetta ^{[3
]}

Ivanytskyi, Oleksii ^{[4
]}

机构：

[1] Isfahan Univ Technol, Dept Phys, Esfahan 8415683111, Iran

[2] Isfahan Univ Technol, ICRANet Isfahan, Esfahan 8415683111, Iran

[3] Univ Coimbra, Dept Phys, CFisUC, P-3004516 Coimbra, Portugal

[4] Univ Wroclaw, Inst Theoret Phys, PL-50204 Wroclaw, Poland

来源：

PHYSICAL REVIEW D | 2022年 / 105卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

EQUATION-OF-STATE; COSMOLOGICAL SIMULATIONS; CONSTRAINTS; STABILITY; FORCES; ENERGY; MILKY;

D O I：

10.1103/PhysRevD.105.023001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study an impact of self-interacting bosonic dark matter (DM) on various observable properties of neutron stars (NSs). The analysis is performed for asymmetric DM with masses from few MeV to GeV, the self-coupling constant of order O eth 1 THORN and various DM fractions. Allowing a mixture between DM and baryonic matter, the formation of a dense DM core or an extended dark halo has been explored. We find that both distribution regimes crucially depend on the mass and fraction of DM for sub-GeV boson masses in the strong coupling regime. From the combined analysis of the mass-radius relation and the tidal deformability of compact stars including bosonic DM, we set a stringent constraint on DM fraction. We conclude that observations of 2 M-circle dot NSs together with Lambda(1.4) <= 580 constraint, set by LIGO/Virgo Collaboration, favor sub-GeV DM particles with low fractions below similar to 5%.

引用

页数：18

共 181 条

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