Detection of GeV Gamma-Ray Emission in the Direction of HESS J1731-347 with Fermi-LAT
文献类型:期刊论文
作者 | Guo, Xiao-Lei; Xin, Yu-Liang; Liao, Neng-Hui; Yuan, Qiang; Gao, Wei-Hong; Fan, Yi-Zhong |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2018 |
卷号 | 853期号:1页码:2 |
英文摘要 | We report the detection of GeV gamma-ray emission from supernova remnant HESS J1731-347 using 9 yr of Fermi Large Area Telescope data. We find a slightly extended GeV source in the direction of HESS J1731-347. The spectrum above 1 GeV can be fitted by a power law with an index of Gamma = 1.77 +/- 0.14, and the GeV spectrum connects smoothly with the TeV spectrum of HESS J1731-347. Either a hadronic-leptonic or a pure leptonic model can fit the multiwavelength spectral energy distribution of the source. However, the hard GeV gamma-ray spectrum is more naturally produced in a leptonic (inverse Compton scattering) scenario, under the framework of diffusive shock acceleration. We also searched for the GeV gamma-ray emission from the nearby TeV source HESS J1729-345. No significant GeV gamma-ray emission is found, and upper limits are derived. |
语种 | 英语 |
WOS记录号 | WOS:000423055800002 |
源URL | [http://libir.pmo.ac.cn/handle/332002/17983] |
专题 | 中国科学院紫金山天文台 |
推荐引用方式 GB/T 7714 | Guo, Xiao-Lei,Xin, Yu-Liang,Liao, Neng-Hui,et al. Detection of GeV Gamma-Ray Emission in the Direction of HESS J1731-347 with Fermi-LAT[J]. ASTROPHYSICAL JOURNAL,2018,853(1):2. |
APA | Guo, Xiao-Lei,Xin, Yu-Liang,Liao, Neng-Hui,Yuan, Qiang,Gao, Wei-Hong,&Fan, Yi-Zhong.(2018).Detection of GeV Gamma-Ray Emission in the Direction of HESS J1731-347 with Fermi-LAT.ASTROPHYSICAL JOURNAL,853(1),2. |
MLA | Guo, Xiao-Lei,et al."Detection of GeV Gamma-Ray Emission in the Direction of HESS J1731-347 with Fermi-LAT".ASTROPHYSICAL JOURNAL 853.1(2018):2. |
入库方式: OAI收割
来源:紫金山天文台
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