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Statistical interpretation of the spatial distribution of current 130 GeV gamma-ray line signal within the dark matter annihilation scenario
Yang, RZ; 袁强;Yuan, Q; Feng, L; Fan, YZ; Chang, J
2012
发表期刊PHYSICS LETTERS B
卷号715期号:4-5页码:285-288
摘要Recently, several groups identified a tentative gamma-ray line signal with energy similar to 130 GeV in the central Galaxy from the Fermi-EAT data. Such a gamma-ray line can be interpreted as the signal of dark matter annihilation. However, the offset similar to 220 pc (1.5 degrees) of the center of the most prominent signal region from the Galactic center Sgr A* has been thought to challenge the dark matter annihilation interpretation. Considering the fact that such a 130 GeV gamma-ray line signal consists of only similar to 14 photons, we suggest that the "imperfect" consistency of these photons with the expected dark matter distribution is due to the limited statistics. The offset will be smaller as more signal photons have been collected in the near future. Our Monte Carlo simulation supports the above speculation. (c) 2012 Elsevier B.V. All rights reserved.
学科领域Physics
DOI10.1016/j.physletb.2012.07.068
收录类别SCI
WOS记录号WOS:000308617500001
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被引频次:21[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223926
专题粒子天体物理中心
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Yang, RZ,袁强;Yuan, Q,Feng, L,et al. Statistical interpretation of the spatial distribution of current 130 GeV gamma-ray line signal within the dark matter annihilation scenario[J]. PHYSICS LETTERS B,2012,715(4-5):285-288.
APA Yang, RZ,袁强;Yuan, Q,Feng, L,Fan, YZ,&Chang, J.(2012).Statistical interpretation of the spatial distribution of current 130 GeV gamma-ray line signal within the dark matter annihilation scenario.PHYSICS LETTERS B,715(4-5),285-288.
MLA Yang, RZ,et al."Statistical interpretation of the spatial distribution of current 130 GeV gamma-ray line signal within the dark matter annihilation scenario".PHYSICS LETTERS B 715.4-5(2012):285-288.
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