Detection of GeV Gamma-Ray Emission in the Direction of HESS J1731-347 with Fermi-LAT

doi:10.3847/1538-4357/aaa3f8

	Detection of GeV Gamma-Ray Emission in the Direction of HESS J1731-347 with Fermi-LAT
	Guo, Xiao-Lei 1,2; Xin, Yu-Liang 1,3; Liao, Neng-Hui 1,2; Yuan, Qiang1,2 ; Gao, Wei-Hong 4,5,6; Fan, Yi-Zhong1,2
刊名	ASTROPHYSICAL JOURNAL
	2018-01-20
卷号	853 期号:1 页码:6
关键词	gamma rays: general gamma rays: ISM ISM: individual objects (HESS J1731-347) ISM: supernova remnants
ISSN号	0004-637X
DOI	10.3847/1538-4357/aaa3f8
通讯作者	Xin, Yu-Liang(ylxin@pmo.ac.cn)
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.
WOS关键词	SUPERNOVA REMNANT RX-J0852.0-4622 ; ACCUMULATED DIFFUSIVE PROTONS ; LARGE-AREA TELESCOPE ; RX J1713.7-3946 ; PARTICLE-ACCELERATION ; MAGIC TELESCOPE ; IC 443 ; SHELL ; DISCOVERY ; TEV
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000423055800002
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/22175]
专题	中国科学院紫金山天文台
通讯作者	Xin, Yu-Liang
作者单位	1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China 3.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China 4.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China 5.Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210046, Jiangsu, Peoples R China 6.INAF Osservatorio Astron Brera, Via E Bianchi 46, I-23807 Merate, Italy
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):6.
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),6.
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):6.