Search for line-like signals in the all-sky Fermi-LAT data

doi:10.1103/PhysRevD.99.123519

	Search for line-like signals in the all-sky Fermi-LAT data
	Li, Shang 1,2; Xia, Zi-Qing 1,3; Liang, Yun-Feng1 ; Duan, Kai-Kai 1,2; Shen, Zhao-Qiang 1,2; Li, Xiang 1; Feng, Lei 1; Yuan, Qiang1,3 ; Fan, Yi-Zhong1,3 ; Chang, Jin1
刊名	PHYSICAL REVIEW D
	2019-06-17
卷号	99 期号:12 页码:10
ISSN号	2470-0010
DOI	10.1103/PhysRevD.99.123519
通讯作者	Liang, Yun-Feng(liangyf@pmo.ac.cn)
英文摘要	In 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).
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000471985900004
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/27522]
专题	中国科学院紫金山天文台
通讯作者	Liang, Yun-Feng
作者单位	1.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
推荐引用方式 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.