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 | |
刊名 | ASTROPHYSICAL JOURNAL |
2016-01-20 | |
卷号 | 817期号:1 |
关键词 | gamma rays: ISM ISM: supernova remnants radiation mechanisms: non-thermal |
英文摘要 | 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. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Astronomy & Astrophysics |
研究领域[WOS] | Astronomy & Astrophysics |
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 |
WOS记录号 | WOS:000368872400064 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/16139] |
专题 | 紫金山天文台_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 |
推荐引用方式 GB/T 7714 | 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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