PMO OpenIR
Search for line-like signals in the all-sky Fermi-LAT data
Li, Shang1,2; Xia, Zi-Qing1,3; Liang, Yun-Feng1; Duan, Kai-Kai1,2; Shen, Zhao-Qiang1,2; Li, Xiang1; Feng, Lei1; Yuan, Qiang1,3; Fan, Yi-Zhong1,3; Chang, Jin1
2019-06-17
Source PublicationPHYSICAL REVIEW D
ISSN2470-0010
Volume99Issue:12Pages:10
Corresponding AuthorLiang, Yun-Feng(liangyf@pmo.ac.cn)
AbstractIn order to search for the line like signals in the Fermi-LAT data, we have analyzed totally 49152 regions of interest (ROIs) that cover the whole sky. No ROI displays a line signal with test statistic (TS) value above 25, while for 50 ROIs weak linelike excesses with TS > 16 are presented. The intrinsic significances of these potential signals arc further reduced by the large trial factor introduced in such kind of analysis. For the largest TS value of 24.3 derived in our analysis, the corresponding global significance is only 0.54 sigma. We thus do not find any significant linelike signal and set up constraints on the cross section of dark matter annihilating to gamma-ray lines, (gamma gamma).
DOI10.1103/PhysRevD.99.123519
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics ; Physics
WOS SubjectAstronomy & Astrophysics ; Physics, Particles & Fields
WOS IDWOS:000471985900004
PublisherAMER PHYSICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/27523
Collection中国科学院紫金山天文台
Corresponding AuthorLiang, Yun-Feng
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210008, Jiangsu, Peoples R China
2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China
3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China
Recommended Citation
GB/T 7714
Li, Shang,Xia, Zi-Qing,Liang, Yun-Feng,et al. Search for line-like signals in the all-sky Fermi-LAT data[J]. PHYSICAL REVIEW D,2019,99(12):10.
APA Li, Shang.,Xia, Zi-Qing.,Liang, Yun-Feng.,Duan, Kai-Kai.,Shen, Zhao-Qiang.,...&Chang, Jin.(2019).Search for line-like signals in the all-sky Fermi-LAT data.PHYSICAL REVIEW D,99(12),10.
MLA Li, Shang,et al."Search for line-like signals in the all-sky Fermi-LAT data".PHYSICAL REVIEW D 99.12(2019):10.
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