Eliminating the LIGO bounds on primordial black hole dark matter

被引：43

作者：

Boehm, Celine ^{[1
]}

Kobakhidze, Archil ^{[1
]}

O'Hare, Ciaran A. J. ^{[1
]}

Picker, Zachary S. C. ^{[1
]}

Sakellariadou, Mairi ^{[2
]}

机构：

[1] Univ Sydney, Sch Phys, Sydney Consortium Particle Phys & Cosmol, Sydney, NSW 2006, Australia

[2] Univ London, Kings Coll London, Phys Dept, Theoret Particle Phys & Cosmol Grp, London WC2R 2LS, England

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2021年 / 03期

基金：

美国国家科学基金会;

关键词：

dark matter theory; primordial black holes; gravitational waves / sources; CONSTRAINTS; ENERGY; LIMITS; MASS;

D O I：

10.1088/1475-7516/2021/03/078

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Primordial black holes (PBHs) in the mass range (30-100) M-circle dot are interesting candidates for dark matter but are tightly constrained by the LIGO merger rate. In deriving these constraints, PBHs were treated as constant Schwarzschild masses. A careful analysis of cosmological black holes however leads to a time-dependent effective mass. This implies stricter conditions for binary formation, so that the binaries formed merge well before LIGO's observations. The observed binaries are those coalescing within galactic halos, at a rate consistent with LIGO data. This reopens the possibility of LIGO mass PBH dark matter.

引用

页数：14

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