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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, Rui-Zhi1,2; Yuan, Qiang1,3; Feng, Lei1; Fan, Yi-Zhong1; Chang, Jin1
2012-09-10
Source PublicationPHYSICS LETTERS B
ISSN0370-2693
Volume715Issue:4-5Pages:285-288
AbstractRecently, 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.
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.physletb.2012.07.068
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000308617500001
Citation statistics
Cited Times:21[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7943
Collection暗物质和空间天文实验室
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Max Planck Inst Kernphys, D-69029 Heidelberg, Germany
3.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Yang, Rui-Zhi,Yuan, Qiang,Feng, Lei,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, Rui-Zhi,Yuan, Qiang,Feng, Lei,Fan, Yi-Zhong,&Chang, Jin.(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, Rui-Zhi,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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