Gravitational waves from dark binaries with finite-range dark forces

被引:0
|
作者
Bai, Yang [3 ]
Lu, Sida [1 ,2 ]
Orlofsky, Nicholas [4 ]
机构
[1] Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai Campus, Zhuhai 519082, Peoples R China
[2] Hong Kong Univ Sci & Technol, Inst Adv Study, Kowloon, Clear Water Bay, Hong Kong, Peoples R China
[3] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA
[4] Univ Warsaw, Inst Theoret Phys, Fac Phys, Ul Pasteura 5, PL-02093 Warsaw, Poland
来源
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2025年 / 03期
关键词
Equations of motion; and 2-body problem in GR and beyond; gravitational waves / sources; dark matter theory; PRIMORDIAL BLACK-HOLES; RADIATION; MATTER; LIMITS;
D O I
10.1088/1475-7516/2025/03/010
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
This paper calculates the stochastic gravitational wave background from dark binaries with finite-range attractive dark forces, complementing previous works which consider long-range dark forces. The finiteness of the dark force range can dramatically modify both the initial distributions and evolution histories of the binaries. The generated gravitational wave spectrum is enhanced in the intermediate frequency regime and exhibits interesting "knee" and "ankle" features, the most common of which is related to the turn on of the dark force mediator radiation. Other such spectral features are related to changes in the binary merger lifetime and the probability distribution for the initial binary separation. The stochastic gravitational wave background from sub-solar-mass dark binaries is detectable by both space- and ground-based gravitational wave observatories.
引用
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页数:40
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