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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
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2015-04-21
Volume448Issue:4Pages:3423-3428
DOI10.1093/mnras/stv255
Contribution Rank第1完成单位
Indexed BySCI
KeywordAcceleration Of Particles Ism: Clouds Cosmic Rays Ism: Supernova Remnants
Abstract

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.

Funding ProjectNational 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]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherXFORD UNIV PRESS,
Publication PlaceGREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND
ISSN0035-8711
URL查看原文
Archive Date2015-03-17
WOS IDWOS:000351529500037
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordNONLINEAR PARTICLE-ACCELERATION ; GALACTIC COSMIC-RAYS ; DIFFUSIVE SHOCK ACCELERATION ; MOLECULAR CLOUDS ; GAMMA-RAYS ; RADIATION ; WAVES ; DISCOVERY ; VICINITY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/5046
Collection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
Corresponding AuthorYang CY(杨初源)
Affiliation1.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
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
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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