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A GeV SOURCE IN THE DIRECTION OF SUPERNOVA REMNANT CTB 37B
Xin, Yu-Liang1,2; Liang, Yun-Feng1,2; Li, Xiang1,2; Yuan, Qiang3; Liu, Si-Ming1; Wei, Da-Ming1
2016-01-20
发表期刊ASTROPHYSICAL JOURNAL
卷号817期号:1
摘要Supernova remnants (SNRs) are the most attractive candidates for the acceleration sites of Galactic cosmic rays. We report the detection of GeV gamma-ray emission with the Pass 8 events recorded by the Fermi Large Area Telescope (Fermi-LAT) in the vicinity of the shell-type SNR CTB 37B that is likely associated with the TeV gamma-ray source HESS J1713-381. The photon spectrum of CTB 37B is consistent with a power law with an index of 1.89 +/- 0.08 in the energy range of 0.5-500 GeV, and the measured flux connects smoothly with that of HESS J1713-381 at a few hundred GeV. No significant spatial extension and time variation are detected. The multi-wavelength data can be well fitted with either a leptonic model or a hadronic one. However, parameters of both models suggest more efficient particle acceleration than typical SNRs. Meanwhile, the X-ray and gamma-ray spectral properties of CTB 37B show that it is an interesting source bridging young SNRs dominated by non-thermal emission and old SNRs interacting with molecular clouds.
文章类型Article
关键词Gamma Rays: Ism Ism: Supernova Remnants Radiation Mechanisms: Non-thermal
WOS标题词Science & Technology ; Physical Sciences
DOI10.3847/0004-637X/817/1/64
关键词[WOS]LARGE-AREA TELESCOPE ; GAMMA-RAY EMISSION ; DIFFUSIVE SHOCK ACCELERATION ; COSMIC-RAYS ; RX J1713.7-3946 ; HESS OBSERVATIONS ; SOURCE CATALOG ; SN 1006 ; RCW 86 ; SHELL
收录类别SCI
语种英语
项目资助者973 Programme of China(2013CB837000 ; National Natural Science of China(11361140349 ; Foundation for Distinguished Young Scholars of Jiangsu Province, China(BK2012047) ; Strategic Priority Research Program(XDB09000000) ; 2014CB845800) ; 11273063 ; 11433009 ; 11173064 ; 11233001 ; 11233008)
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
WOS记录号WOS:000368872400064
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文献类型期刊论文
条目标识符http://libir.pmo.ac.cn/handle/332002/16139
专题暗物质和空间天文实验室
作者单位1.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China
3.Univ Massachusetts, Dept Astron, Amherst, MA 01002 USA
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Xin, Yu-Liang,Liang, Yun-Feng,Li, Xiang,et al. A GeV SOURCE IN THE DIRECTION OF SUPERNOVA REMNANT CTB 37B[J]. ASTROPHYSICAL JOURNAL,2016,817(1).
APA Xin, Yu-Liang,Liang, Yun-Feng,Li, Xiang,Yuan, Qiang,Liu, Si-Ming,&Wei, Da-Ming.(2016).A GeV SOURCE IN THE DIRECTION OF SUPERNOVA REMNANT CTB 37B.ASTROPHYSICAL JOURNAL,817(1).
MLA Xin, Yu-Liang,et al."A GeV SOURCE IN THE DIRECTION OF SUPERNOVA REMNANT CTB 37B".ASTROPHYSICAL JOURNAL 817.1(2016).
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