Indirect detection of dark matter using MeV-range gamma-ray telescopes

被引：70
作者：
Boddy, Kimberly K. [1 ]
Kumar, Jason [1 ]
机构：
[1] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA
来源：
PHYSICAL REVIEW D | 2015年 / 92卷 / 02期
基金：
美国国家科学基金会;
关键词：
COSMIC X-RAY; BACKGROUND-RADIATION; ORIGIN; ANNIHILATIONS; CONSTRAINTS; EVOLUTION; HALOS; IA;
D O I：
10.1103/PhysRevD.92.023533
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The astrophysics community is considering plans for a variety of gamma-ray telescopes (including ACT, GRIPS, and AdEPT) in the energy range 1-100 MeV, which can fill in the so-called "MeV gap" in current sensitivity. We investigate the utility of such detectors for the study of low-mass dark matter annihilation or decay. For annihilating (decaying) dark matter with a mass below about 140 MeV (280 MeV) and couplings to first generation quarks, the final states will be dominated by photons or neutral pions, producing striking signals in gamma-ray telescopes. We determine the sensitivity of future detectors to the kinematically allowed final states. In particular, we find that planned detectors can improve on current sensitivity to this class of models by up to a few orders of magnitude.
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页数：13
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