Primordial black hole interpretation in subsolar mass gravitational wave candidate SSM200308

被引：1

作者：

Yuan, Chen ^{[1
]}

Huang, Qing-Guo ^{[2
,3
,4
]}

机构：

[1] Univ Lisbon, Inst Super Tecn IST, Dept Fis, CENTRA, Ave Rovisco Pais 1, P-1049001 Lisbon, Portugal

[2] Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China

[3] Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China

[4] UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2024年 / 09期

基金：

新加坡国家研究基金会; 欧盟地平线“2020”;

关键词：

gravitational waves; sources; primordial black holes; RADIATION; COLLAPSE;

D O I：

10.1088/1475-7516/2024/09/051

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In the recent second part of the third observation run by the LIGO-Virgo-KAGRA collaboration, a candidate with sub-solar mass components was reported, which we labelled as SSM200308. This study investigates the premise that primordial black holes (PBHs), arising from Gaussian perturbation collapses, could explain SSM200308. Through Bayesian analysis, we obtain the primordial curvature power spectrum that leads to the merger rate of PBHs aligning with observational data as long as they constitute f(PBH) = 5.66(-5.44)(+58.68) x 10(-2) of the dark matter. However, while the gravitational wave (GW) background from binary PBH mergers is within current observational limits, the scalar-induced GWs associated with PBH formation exceed the constraints imposed by pulsar timing arrays, challenging the Gaussian perturbation collapse PBH model as the source of SSM200308.

引用

页数：17

共 122 条

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