Testing primordial black hole and measuring the Hubble constant with multiband gravitational-wave observations

被引：23

作者：

Liu, Lang ^{[1
,2
,3
]}

Yang, Xing-Yu ^{[4
,5
,6
]}

Guo, Zong-Kuan ^{[5
,6
,7
]}

Cai, Rong-Gen ^{[5
,6
,7
]}

机构：

[1] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China

[2] Beijing Normal Univ, Adv Inst Nat Sci, Zhuhai 519087, Peoples R China

[3] Kunsan Natl Univ, Dept Phys, Kunsan 54150, South Korea

[4] Korea Inst Adv Study, Seoul 02455, South Korea

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

[6] Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China

[7] Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2023年 / 01期

基金：

中国国家自然科学基金; 新加坡国家研究基金会;

关键词：

gravitational waves / experiments; gravitational waves / theory; primordial black holes; CONSTRAINTS; LIMITS;

D O I：

10.1088/1475-7516/2023/01/006

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

There exist two kinds of stochastic gravitational-wave backgrounds associated with the primordial curvature perturbations. One is called induced gravitational wave due to the nonlinear coupling of curvature perturbations to tensor perturbations, while the other is produced by coalescences of binary primordial black holes formed when the large amplitude curvature perturbations reenter the horizon in the radiation dominant era. In this paper we find a quite useful relation for the peak frequencies of these two stochastic gravitational-wave backgrounds. This relation can not only offer a smoking-gun criterion for the existence of primordial black holes, but also provide a method for measuring the Hubble constant H-0 by multiband observations of the stochastic gravitational-wave backgrounds.

引用

页数：17

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