Excesses of cosmic ray spectra from a single nearby source
文献类型：期刊论文
| 作者 | Wang, BB ; Bi, XJ; Lin SJ(林苏杰); Bi XJ(毕效军); Wang BB(王兵兵); Yin PF(殷鹏飞); Liu, W; Lin, SJ; Liu W(刘伟); Yin, PF
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| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2017 |
| 卷号 | 96期号:2页码:23006 |
| ISSN号 | 2470-0010 |
| DOI | 10.1103/PhysRevD.96.023006 |
| 文献子类 | Article |
| 英文摘要 | Growing evidence reveals universal hardening on various cosmic ray spectra, e.g., proton, positron, as well as antiproton fractions. Such universality may indicate they have a common origin. In this paper, we argue that these widespread excesses can be accounted for by a nearby supernova remnant surrounded by a giant molecular cloud. Secondary cosmic rays (p, e(+)) are produced through the collisions between the primary cosmic-ray nuclei from this supernova remnant and the molecular gas. Different from the background, which is produced by the ensemble of a large number of sources in the Milky Way, the local injected spectrum can be harder. The time-dependent transport of particles would make the propagated spectrum even harder. Under this scenario, the anomalies of both primary (p, e(-)) and secondary (e(+),(p) over bar /p) cosmic rays can be properly interpreted. We further show that the TeV to sub-PeV anisotropy of the proton is consistent with the observations if the local source is relatively young and lying at the anti-Galactic center direction. |
| 电子版国际标准刊号 | 2470-0029 |
| WOS关键词 | DARK-MATTER ; SUPERNOVA-REMNANTS ; HELIUM SPECTRA ; MYRIAD MODEL ; ORIGIN ; ELECTRONS ; ENERGIES ; PROTON ; ACCELERATION ; PROPAGATION |
| WOS研究方向 | Astronomy & Astrophysics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000406307500001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284393]  |
| 专题 | 高能物理研究所_粒子天体物理中心 高能物理研究所_核技术应用研究中心 |
| 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 | Wang, BB,Bi, XJ,Lin SJ,et al. Excesses of cosmic ray spectra from a single nearby source[J]. PHYSICAL REVIEW D,2017,96(2):23006. |
| APA | Wang, BB.,Bi, XJ.,林苏杰.,毕效军.,王兵兵.,...&Yin, PF.(2017).Excesses of cosmic ray spectra from a single nearby source.PHYSICAL REVIEW D,96(2),23006. |
| MLA | Wang, BB,et al."Excesses of cosmic ray spectra from a single nearby source".PHYSICAL REVIEW D 96.2(2017):23006. |
入库方式： OAI收割
来源：高能物理研究所
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