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Implications on the origin of cosmic rays in light of 10 TV spectral softenings
Yue, Chuan1; Ma, Peng-Xiong1,2; Yuan, Qiang1,2,3; Fan, Yi-Zhong1,2; Chen, Zhan-Fang1,2; Cui, Ming-Yang1; Dai, Hao-Ting4; Dong, Tie-Kuang1; Huang, Xiaoyuan1; Jiang, Wei1,2; Lei, Shi-Jun1; Li, Xiang1; Liu, Cheng-Ming4; Liu, Hao1; Liu, Yang1; Luo, Chuan-Ning1,2; Pan, Xu1,2; Peng, Wen-Xi5; Qiao, Rui5; Wei, Yi-Feng4; Wu, Li-Bo4; Xu, Zhi-Hui1,2; Xu, Zun-Lei1; Yuan, Guan-Wen1,2; Zang, Jing-Jing1; Zhang, Ya-Peng6; Zhang, Yong-Jie6; Zhang, Yun-Long4
2019-12-23
Source PublicationFRONTIERS OF PHYSICS
ISSN2095-0462
Volume15Issue:2Pages:9
Corresponding AuthorYuan, Qiang(yuanq@pmo.ac.cn) ; Fan, Yi-Zhong(yzfan@pmo.ac.cn)
AbstractPrecise measurements of the energy spectra of cosmic rays (CRs) show various kinds of features deviating from single power-laws, which give very interesting and important implications on their origin and propagation. Previous measurements from a few balloon and space experiments indicate the existence of spectral softenings around 10 TV for protons (and probably also for Helium nuclei). Very recently, the DArk Matter Particle Explorer (DAMPE) measurement about the proton spectrum clearly reveals such a softening with a high significance. Here we study the implications of these new measurements, as well as the groundbased indirect measurements, on the origin of CRs. We find that a single component of CRs fails to fit the spectral softening and the air shower experiment data simultaneously. In the framework of multiple components, we discuss two possible scenarios, the multiple source population scenario and the background plus nearby source scenario. Both scenarios give reasonable fits to the wide-band data from TeV to 100 PeV energies. Considering the anisotropy observations, the nearby source model is favored.
Keywordcosmic rays
DOI10.1007/s11467-019-0946-8
WOS KeywordENERGY-SPECTRA ; DEPENDENT PROPAGATION ; ELEMENTAL GROUPS ; ANISOTROPY ; KNEE ; COMPONENT ; PROTON ; RANGE ; MODEL
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000511738700001
PublisherHIGHER EDUCATION PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/36258
Collection中国科学院紫金山天文台
Corresponding AuthorYuan, Qiang; Fan, Yi-Zhong
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210033, Peoples R China
2.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
3.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
4.Univ Sci & Technol China, State Key Lab Particle Detect & Elect, Hefei 230026, Peoples R China
5.Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Yue, Chuan,Ma, Peng-Xiong,Yuan, Qiang,et al. Implications on the origin of cosmic rays in light of 10 TV spectral softenings[J]. FRONTIERS OF PHYSICS,2019,15(2):9.
APA Yue, Chuan.,Ma, Peng-Xiong.,Yuan, Qiang.,Fan, Yi-Zhong.,Chen, Zhan-Fang.,...&Zhang, Yun-Long.(2019).Implications on the origin of cosmic rays in light of 10 TV spectral softenings.FRONTIERS OF PHYSICS,15(2),9.
MLA Yue, Chuan,et al."Implications on the origin of cosmic rays in light of 10 TV spectral softenings".FRONTIERS OF PHYSICS 15.2(2019):9.
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