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On the escape and propagation of high-energy protons near young supernova remnants
Yang CY(杨初源)1,2; Zhang, Li3; Wang JC(王建成)1,2
发表期刊MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2015-04-21
卷号448期号:4页码:3423-3428
DOI10.1093/mnras/stv255
产权排序第1完成单位
收录类别SCI
关键词Acceleration Of Particles Ism: Clouds Cosmic Rays Ism: Supernova Remnants
摘要

The escape and propagation of high-energy protons near young supernova remnants (SNRs) are investigated in the frame of non-linear diffusive shock acceleration (NLDSA) model by using two methods. In the first method, the particle diffusion is assumed to be different inside and outside the absorbing boundary of the particles accelerated in the SNR shock, and the proton spectra at a given distance of the outer region and corresponding pi(0) decay gamma-ray spectra can be calculated if a molecular cloud is assumed to be at the distance. In the second method, the total spectrum of high-energy protons escaping from an absorbing boundary during the SNR evolution time is treated as injection rate of the protons and the proton spectrum is calculated in the accumulative diffusion model. Our results show that (1) the spectrum of high-energy protons escaping from a young SNR does not have a power-law form and the protons concentrate on high-energy region and (2) the escaping proton spectra and corresponding pi(0) decay gamma-ray spectra predicted in both methods are different, indicating that the second method overestimates the propagation effect. We may conclude that the first method is a more realistic description of the escape and propagation of high-energy protons near SNRs.

资助项目National Science Foundation of China[11433004] ; National Science Foundation of China[11173020] ; National Science Foundation of China[11133006] ; National Science Foundation of China[11163006] ; National Science Foundation of China[11173054] ; National Science Foundation of China[11303012] ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences[XDB09000000]
项目资助者National Science Foundation of China[11433004, 11173020, 11133006, 11163006, 11173054, 11303012] ; Strategic Priority Research Program 'The Emergence of Cosmological Structures' of the Chinese Academy of Sciences[XDB09000000]
语种英语
学科领域天文学 ; 天体物理学 ; 高能天体物理学
学科门类理学 ; 理学::天文学
文章类型Article
出版者XFORD UNIV PRESS,
出版地GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
归档日期2015-03-17
WOS记录号WOS:000351529500037
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]NONLINEAR PARTICLE-ACCELERATION ; GALACTIC COSMIC-RAYS ; DIFFUSIVE SHOCK ACCELERATION ; MOLECULAR CLOUDS ; GAMMA-RAYS ; RADIATION ; WAVES ; DISCOVERY ; VICINITY
引用统计
被引频次:6[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/114a53/5046
专题高能天体物理研究组
中国科学院天体结构与演化重点实验室
通讯作者Yang CY(杨初源)
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
3.Department of Astronomy, Yunnan University, Key Laboratory of Astroparticle Physics of Yunnan Province, Kunming 650091, China
第一作者单位中国科学院云南天文台
通讯作者单位中国科学院云南天文台
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Yang CY,Zhang, Li,Wang JC. On the escape and propagation of high-energy protons near young supernova remnants[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2015,448(4):3423-3428.
APA Yang CY,Zhang, Li,&Wang JC.(2015).On the escape and propagation of high-energy protons near young supernova remnants.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,448(4),3423-3428.
MLA Yang CY,et al."On the escape and propagation of high-energy protons near young supernova remnants".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 448.4(2015):3423-3428.
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