Revisiting SNR Puppis A with Seven Years of Fermi Large Area Telescope Observations | |
Xin, Yu-Liang1,2; Guo, Xiao-Lei1,3,4; Liao, Neng-Hui1,5; Yuan, Qiang1,5![]() ![]() ![]() | |
刊名 | ASTROPHYSICAL JOURNAL
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2017-07-10 | |
卷号 | 843期号:2页码:8 |
关键词 | gamma rays: general ISM: supernova remnants radiation mechanisms: non-thermal |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/aa74bb |
英文摘要 | Puppis A is a very famous and extensively studied supernova remnant that shows strong evidence of shock-cloud interaction. We reanalyze its GeV gamma-ray emission using seven years of Pass 8 data recorded by the Fermi Large Area Telescope. The morphology of the gamma-ray emission is more compatible with that of the thermal X-ray and IR emissions than the radio image, which suggests a possible correlation between the gamma-ray-emitting region and dense clouds. The gamma-ray spectrum in the energy range of 1-500 GeV shows a break at 7.92 +/- 1.91 GeV, with photon indices of 1.81 +/- 0.08 below the break and 2.53 +/- 0.12 above the break, which can naturally explain the lack of TeV gamma-ray emission from Puppis A. The multi-wavelength observations favor a hadronic origin for the gamma-ray emission. |
WOS关键词 | GAMMA-RAY EMISSION ; SUPERNOVA REMNANT PUPPIS ; ACCUMULATED DIFFUSIVE PROTONS ; GALACTIC COSMIC-RAYS ; BRIGHT EASTERN KNOT ; QUIET NEUTRON-STAR ; EMITTING EJECTA ; SOURCE CATALOG ; RX J0822-4300 ; LAT |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000405010600013 |
内容类型 | 期刊论文 |
源URL | [http://libir.pmo.ac.cn/handle/332002/22919] ![]() |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Yuan, Qiang |
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.Nanjing Normal Univ, Dept Phys, Nanjing 210046, Jiangsu, Peoples R China 4.Nanjing Normal Univ, Inst Theoret Phys, Nanjing 210046, Jiangsu, Peoples R China 5.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | Xin, Yu-Liang,Guo, Xiao-Lei,Liao, Neng-Hui,et al. Revisiting SNR Puppis A with Seven Years of Fermi Large Area Telescope Observations[J]. ASTROPHYSICAL JOURNAL,2017,843(2):8. |
APA | Xin, Yu-Liang,Guo, Xiao-Lei,Liao, Neng-Hui,Yuan, Qiang,Liu, Si-Ming,&Wei, Da-Ming.(2017).Revisiting SNR Puppis A with Seven Years of Fermi Large Area Telescope Observations.ASTROPHYSICAL JOURNAL,843(2),8. |
MLA | Xin, Yu-Liang,et al."Revisiting SNR Puppis A with Seven Years of Fermi Large Area Telescope Observations".ASTROPHYSICAL JOURNAL 843.2(2017):8. |
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