| Possible contribution of mature gamma-ray pulsars to cosmic-ray positrons | |
Gao QG(高全归)1 ; Jiang, ZJ2; Zhang L(张力)1,2; Gao, QG (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China.
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| 发表期刊 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
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| 2008 | |
| 卷号 | 8期号:1页码:87-95 |
| DOI | 10.1088/1009-9271/8/1/09 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Stars : Pulsars : General Acceleration Of Particles Ism : Cosmic Rays |
| 摘要 | We restudy the possible contribution of mature gamma-ray pulsars to cosmic ray positrons based on the new version of outer gap model. In this model, the inclination angle and average properties of the outer gap are taken into account, and more mature pulsars can have the outer gap and emit high energy photons. Half of the primary particles in the outer gaps will flow back toward the star surface and emit synchrotron photons, which can produce electron/positron pairs by the cascade of pair production. Some of these pairs will escape from the light cylinder and be accelerated to relativistic energies in the pulsar wind driven by low-frequency electromagnetic waves. Using a Monte Carlo method, we obtain a sample of mature gamma-ray pulsars and then calculate the production of the positrons from these pulsars. The observed excess of cosmic positrons can be well explained by this model. |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 1009-9271 |
| URL | 查看原文 |
| 归档日期 | 2009-01-08 |
| WOS记录号 | WOS:000253671300009 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | RAPIDLY SPINNING PULSARS ; ROTATION-POWERED PULSARS ; HIGH-ENERGY RADIATION ; OUTER GAPS ; EVOLUTION ; EMISSION ; RADIO ; POPULATIONS ; STATISTICS ; LUMINOSITY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4229 |
| 专题 | 其他 |
| 通讯作者 | Gao, QG (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, Kunming 650011, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories / Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011 2.Department of Physics, Yunnan University, Kunming 650091 |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Gao QG,Jiang, ZJ,Zhang L,et al. Possible contribution of mature gamma-ray pulsars to cosmic-ray positrons[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2008,8(1):87-95. |
| APA | Gao QG,Jiang, ZJ,Zhang L,&Gao, QG .(2008).Possible contribution of mature gamma-ray pulsars to cosmic-ray positrons.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,8(1),87-95. |
| MLA | Gao QG,et al."Possible contribution of mature gamma-ray pulsars to cosmic-ray positrons".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 8.1(2008):87-95. |
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| Possible Contributio（328KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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