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; Fang, J (reprint author), Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China.
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2013-10
卷号435期号:1页码:570-574
DOI10.1093/mnras/stt1318
收录类别SCI
关键词Ism: Individual Objects: Ic 443 Ism: Individual Objects: W44 Ism: Supernova Remnants
摘要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.
项目资助者National 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)
语种英语
学科领域Astronomy & Astrophysics
文章类型Article
ISSN0035-8711
URL查看原文
WOS记录号WOS:000325804300039
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]DIFFUSIVE SHOCK ACCELERATION ; EMISSION ; IC-443 ; TELESCOPE ; PARTICLES ; PROTONS ; WAVES ; DENSE ; GAS ; W28
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/9424
专题中国科学院天体结构与演化重点实验室
通讯作者Fang, J (reprint author), Yunnan Univ, Dept Phys, Kunming 650091, Peoples R China.
作者单位1.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
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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,&Fang, J .(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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