Local flux of low-energy antiprotons from evaporating primordial black holes

被引：86

作者：

Maki, K

Mitsui, T

Orito, S

机构：

[1] Department of Physics, School of Science, University of Tokyo, Tokyo

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 76卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.76.3474

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate low-energy cosmic-ray antiprotons (<(p)over bar 's>) arising from the fragmentation of quarks and gluons emitted from evaporating primordial black holes (PBHs). To calculate the local interstellar flux of these <(p)over bar 's>, their propagation in the Galaxy is described by a 3D Monte Carlo simulation based on the diffusion model. This flux is used with recent observations to derive new upper limits on (i) the local PBH explosion rate R < 1.7 x 10(-2) pc(-3) yr(-1), (ii) the fraction of the Universe's mass going into PBHs with particular mass, and (iii) the average density of PBHs in the Universe.

引用

页码：3474 / 3477

页数：4

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