Dark matter around primordial black hole at the radiation-dominated stage

被引：6
|
作者：
Eroshenko, Yu N. [1 ]
机构：
[1] Russian Acad Sci, Inst Nucl Res, Prosp 60 Letiya Oktyabrya 7a, Moscow 117312, Russia
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS A | 2020年 / 35卷 / 2-3期
关键词：
Primordial black hole; dark matter; cosmology;
D O I：
10.1142/S0217751X20400461
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
The accumulation of dark matter particles near the primordial black holes starts at the radiation-dominated cosmological stage and produces the central density spikes. The spikes can be the bright gamma-ray sources due to dark matter annihilation. We present the self-consistent derivation of the equation of motion of particle in the metrics of primordial black hole immersed into cosmological background. By numerical solution of this equation we find the central dark matter density profile. The density growth is suppressed in the central part of the profile compared with previous calculations.
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页数：5
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