Expected enhancement of the primary antiproton flux at the solar minimum

被引：47

作者：

Mitsui, T

Maki, K

Orito, S

机构：

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

来源：

PHYSICS LETTERS B | 1996年 / 389卷 / 01期

基金：

美国国家科学基金会; 日本学术振兴会;

关键词：

cosmic-ray antiprotons; solar modulation; dark matter; supersymmetric models; primordial black holes; hawking radiation;

D O I：

10.1016/S0370-2693(96)01363-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the solar-modulated energy spectra of cosmic-ray antiprotons (<(p)over bar 's>) from two candidate primary sources, i.e., evaporating primordial black holes and the annihilation of neutralino dark matter, as well as for the secondary <(p)over bar 's> produced by cosmic-ray interactions with interstellar gas. ll large enhancement toward the solar minimum phase emerges in the low-energy flux of <(p)over bar 's> from the primary sources, whereas the flux of the secondary <(p)over bar 's>, falling steeply below 2 GeV, does not significantly vary. This enables us to conduct a very sensitive search for primary (p) over bar components by precisely measuring the (p) over bar spectrum, especially at low energies, throughout the forthcoming solar minimum phase.

引用

页码：169 / 175

页数：7

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