Implications on cosmic ray injection and propagation parameters from Voyager/ACE/AMS-02 nucleus data
文献类型：期刊论文
| 作者 | Yuan, Qiang1,2,3
|
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2019-04-01 |
| 卷号 | 62期号:4页码:8 |
| 关键词 | cosmic rays propagation origin and acceleration data analysis |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-018-9300-0 |
| 通讯作者 | Yuan, Qiang(yuanq@pmo.ac.cn) |
| 英文摘要 | We study the propagation and injection models of cosmic rays using the latest measurements of the boron-to-carbon ratio and fluxes of protons, helium, carbon, and oxygen nuclei by the Alpha Magnetic Spectrometer and the Advanced Composition Ex- plorer at top of the Earth, and the Voyager spacecraft outside the heliosphere. The Advanced Composition Explorer (ACE) data during the same time interval of the AMS-02 data are extracted to minimize the complexity of the solar modulation effect. We find that the cosmic ray nucleus data favor a modified version of the diffusion-reacceleration scenario of the propagation. The diffusion coefficient is, however, required to increase moderately with decreasing rigidity at low energies, which has interesting implications on the particle and plasma interaction in the Milky Way. We further find that the low rigidity (< a few GV) injection spectra are different for different compositions. The injection spectra are softer for lighter nuclei. These results are expected to be helpful in understanding the acceleration process of cosmic rays. |
| WOS关键词 | ENERGY-SPECTRA ; SECONDARY ; GALAXY ; BE-10 ; TURBULENCE ; LIFETIME |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000449794000001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/20894]  |
| 专题 | 中国科学院紫金山天文台 |
| 通讯作者 | Yuan, Qiang |
| 作者单位 | 1.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China 2.Chinese Acad Sci, Key Lab Dark Matter & Space Astron, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Qiang. Implications on cosmic ray injection and propagation parameters from Voyager/ACE/AMS-02 nucleus data[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2019,62(4):8. |
| APA | Yuan, Qiang.(2019).Implications on cosmic ray injection and propagation parameters from Voyager/ACE/AMS-02 nucleus data.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,62(4),8. |
| MLA | Yuan, Qiang."Implications on cosmic ray injection and propagation parameters from Voyager/ACE/AMS-02 nucleus data".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 62.4(2019):8. |
入库方式： OAI收割
来源：紫金山天文台
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