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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; Liu, Si-Ming1,5; Wei, Da-Ming1,5
2017-07-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume843Issue:2Pages:8
Abstract

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.

Keywordgamma rays: general ISM: supernova remnants radiation mechanisms: non-thermal
DOI10.3847/1538-4357/aa74bb
WOS KeywordGAMMA-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
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000405010600013
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22920
Collection中国科学院紫金山天文台
Corresponding AuthorYuan, Qiang
Affiliation1.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
Recommended Citation
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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