Constraining heavy decaying dark matter with the high energy gamma-ray limits

被引：51
|
作者：
Kalashev, O. E. [1 ]
Kuznetsov, M. Yu. [1 ]
机构：
[1] Russian Acad Sci, Inst Nucl Res, 60th October Anniversary Prospect 7a, Moscow 117312, Russia
来源：
PHYSICAL REVIEW D | 2016年 / 94卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
COSMIC-RAYS; ANISOTROPY; NEUTRINOS; SPECTRUM; FLUX;
D O I：
10.1103/PhysRevD.94.063535
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We consider decaying dark matter with masses 10(7) less than or similar to M less than or similar to 10(16) GeV as a source of ultrahigh energy (UHE) gamma rays. Using recent limits on UHE gamma-ray flux for energies E-gamma > 2 x 10(14) eV, provided by extensive air shower observatories, we put limits on masses and lifetimes of the dark matter. We also discuss possible dark matter decay origin of tentative 100 PeV photon flux detected with the EAS-MSU experiment.
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页数：6
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