Cosmic ray electron spectrum due to the dispersion of injection spectrum
文献类型：期刊论文
| 作者 | Liu W(刘伟); Chen, TL; Danzengluobu; Li, HJ ; Liu, MY; Shi, Y; Gao, Q; Liu, W
|
| 刊名 | CHINESE PHYSICS C
 |
| 出版日期 | 2018 |
| 卷号 | 42期号:7页码:75001 |
| 关键词 | electron spectrum cosmic rays source DAMPE |
| ISSN号 | 1674-1137 |
| DOI | 10.1088/1674-1137/42/7/075001 |
| 文献子类 | Article |
| 英文摘要 | The cosmic-ray total electron spectrum (electrons plus positrons) has been measured precisely up to TeV energies, with more interesting features found. Exhaustive analyses of the electron spectrum strongly support a spectral hardening above 100 GeV, rather than a featureless single power-law, which is confirmed by the most recent observations. Meanwhile, the measurements of the DAMPE satellite have verified the presence of a knee-like structure around 1 TeV in the electron spectrum, resembling the cosmic-ray knee. In this paper, we establish a physical model in which the observed electron spectrum is composed of a superposition of CR sources with various spectral indices and high-energy cutoffs. The dispersion of the power index is assumed to be Gaussian, while the cutoff energy E c follows a power-law distribution. These simple ideas can account naturally for both the hundred-GeV excess and the TeV spectral break. |
| 电子版国际标准刊号 | 2058-6132 |
| WOS关键词 | SUPERNOVA-REMNANTS ; HIGH-ENERGY ; SHOCK ACCELERATION ; HELIUM SPECTRA ; EXCESS ; PROTON ; RADIATION ; ESCAPE ; ORIGIN |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| CSCD记录号 | CSCD:6267449 |
| WOS记录号 | WOS:000436109700013 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/286063]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_实验物理中心 |
| 通讯作者 | Liu W(刘伟) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Liu W,Chen, TL,Danzengluobu,et al. Cosmic ray electron spectrum due to the dispersion of injection spectrum[J]. CHINESE PHYSICS C,2018,42(7):75001. |
| APA | 刘伟.,Chen, TL.,Danzengluobu.,Li, HJ.,Liu, MY.,...&Liu, W.(2018).Cosmic ray electron spectrum due to the dispersion of injection spectrum.CHINESE PHYSICS C,42(7),75001. |
| MLA | 刘伟,et al."Cosmic ray electron spectrum due to the dispersion of injection spectrum".CHINESE PHYSICS C 42.7(2018):75001. |
入库方式： OAI收割
来源：高能物理研究所
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