Gamma-ray pulsar halos in the Galaxy
文献类型：期刊论文
| 作者 | Fang, Kun
|
| 刊名 | FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
 |
| 出版日期 | 2022 |
| 卷号 | 9页码:1022100 |
| 关键词 | cosmic rays Cosmic ray propagation Supernova remnants pulsar pulsar wind nebulae cosmic radiation, propagation electron, injection cosmic radiation, diffusion pulsar halo gamma ray galaxy positron TeV supernova structure |
| DOI | 10.3389/fspas.2022.1022100 |
| 文献子类 | Article |
| 英文摘要 | Pulsar halos are extended gamma-ray structures generated by electrons and positrons escaping from pulsar wind nebulae (PWNe), considered a new class of gamma-ray sources. They are ideal indicators for cosmic-ray propagation in localized regions of the Galaxy and particle escape process from PWNe. The cosmic-ray diffusion coefficient inferred from pulsar halos is more than two orders of magnitude smaller than the average value in the Galaxy, which has been arousing extensive discussion. We review the recent advances in the study of pulsar halos, including the characteristics of this class of sources, the known pulsar halos, the possible mechanisms of the extremely slow diffusion, the critical roles of pulsar halos in the studies of cosmic-ray propagation and electron injection from PWNe, and the implications on the problems of the cosmic positron excess and the diffuse TeV gamma-ray excess. Finally, we give prospects for the study in this direction based on the expectation of a larger sample of pulsar halos and deeper observations for bright sources. |
| 电子版国际标准刊号 | 2296-987X |
| 语种 | 英语 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/299481]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 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 | Fang, Kun. Gamma-ray pulsar halos in the Galaxy[J]. FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,2022,9:1022100. |
| APA | Fang, Kun.(2022).Gamma-ray pulsar halos in the Galaxy.FRONTIERS IN ASTRONOMY AND SPACE SCIENCES,9,1022100. |
| MLA | Fang, Kun."Gamma-ray pulsar halos in the Galaxy".FRONTIERS IN ASTRONOMY AND SPACE SCIENCES 9(2022):1022100. |
入库方式： OAI收割
来源：高能物理研究所
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