X-ray and gamma-ray limits on the primordial black hole abundance from Hawking radiation

被引：51

作者：

Ballesteros, Guillermo ^{[1
,2
]}

Coronado-Blazquez, Javier ^{[1
,2
]}

Gaggero, Daniele ^{[1
]}

机构：

[1] UAM, Inst Fis Teor, CSIC, Calle Nicolas Cabrera 13-15, E-28049 Madrid, Spain

[2] Univ Autonoma Madrid UAM, Dept Fis Teor, Campus Cantoblanco, Madrid 28049, Spain

来源：

PHYSICS LETTERS B | 2020年 / 808卷

关键词：

TELESCOPE; SPECTRUM; ORIGIN;

D O I：

10.1016/j.physletb.2020.135624

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The non-observation of extragalactic Hawking radiation from primordial black holes of 10(16) g sets a conservative strong bound on their cosmological abundance. We revisit this bound and show how it can be improved (both in mass reach and strength) by an adequate modeling of the combined AGN and blazar emission in the MeV range. We also estimate the sensitivity to the primordial black hole abundance of a future X-ray experiment capable of identifying a significantly larger number of astrophysical sources contributing to the diffuse background in this energy range. (C) 2020 The Author(s). Published by Elsevier B.V.

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