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Gamma-ray properties of supernova remnants transporting into molecular clouds: the cases of IC 443 and W44
Fang, Jun1,2; Yu, Huan1; Zhu, Bo-Tao1; Zhang, Li1
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-10
Volume435Issue:1Pages:570-574
DOI10.1093/mnras/stt1318
Indexed BySCI
KeywordIsm: Individual Objects: Ic 443 Ism: Individual Objects: W44 Ism: Supernova Remnants
Abstract

Motivated by the recent report of the detailed spectra of IC 443 and W44 based on four years of observations with the Fermi Large Area Telescope, gamma-rays produced via proton-proton interaction in the two supernova remnants (SNRs) have been investigated in the diffusive shock acceleration scenario. In the model, a part of the SNR shell transporting into ambient dense molecular clouds (MCs), and a shock with a relatively low Alfven Mach number can be produced. Relativistic protons are accelerated in the shock via the diffusive acceleration process; moreover, a break in the particle distribution is induced since the damping of Alfven waves when the shock transporting into partly ionized plasma. A spectrum of the accelerated protons in the shock can be obtained in the test-particle case, taking into account the effect of the ambient partly ionized plasma on the acceleration process. Furthermore, hadronic gamma-rays with a peak around several GeVs are reproduced as the protons inelastically colliding with the ambient matter of the crushed gas. The observed gamma-ray spectral distributions of the SNR IC 443 and W44 can be successfully reproduced using the static model in the test-particle scenario. It can be concluded that the observed gamma-rays can be explained in the diffusive shock case as the shock waves transporting into the dense MCs for the two remnants.

Funding ProjectNational Natural Science Foundation of China[NSFC 11103016] ; National Natural Science Foundation of China[11173020] ; Yunnan Province[2011FB012] ; Foundation of Yunnan University[XT412003] ; light of the western talent training project[W8090303] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201101]
Funding OrganizationNational Natural Science Foundation of China[NSFC 11103016, 11173020] ; Yunnan Province[2011FB012] ; Foundation of Yunnan University[XT412003] ; light of the western talent training project[W8090303] ; Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences[OP201101]
Language英语
Subject Area天文学 ; 恒星与银河系
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherOXFORD UNIV PRESS
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
WOS IDWOS:000325804300039
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordDIFFUSIVE SHOCK ACCELERATION ; EMISSION ; IC-443 ; TELESCOPE ; PARTICLES ; PROTONS ; WAVES ; DENSE ; GAS ; W28
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/9424
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorFang, Jun
Affiliation1.Department of Physics, Yunnan University, Kunming 650091, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
Recommended Citation
GB/T 7714
Fang, Jun,Yu, Huan,Zhu, Bo-Tao,et al. Gamma-ray properties of supernova remnants transporting into molecular clouds: the cases of IC 443 and W44[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,435(1):570-574.
APA Fang, Jun,Yu, Huan,Zhu, Bo-Tao,&Zhang, Li.(2013).Gamma-ray properties of supernova remnants transporting into molecular clouds: the cases of IC 443 and W44.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,435(1),570-574.
MLA Fang, Jun,et al."Gamma-ray properties of supernova remnants transporting into molecular clouds: the cases of IC 443 and W44".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 435.1(2013):570-574.
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