Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points
文献类型：期刊论文
| 作者 | Li Y(李燕)1,2 ; Lin J(林隽)1,3
|
| 刊名 | SOLAR PHYSICS
 |
| 出版日期 | 2012-07 |
| 卷号 | 279期号:1页码:91-113 |
| 关键词 | Solar flares Magnetic reconnection Current sheet Energetic particles |
| ISSN号 | 0038-0938 |
| 产权排序 | 第一完成单位 |
| 通讯作者 | Li, Y (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China. |
| 英文摘要 | Kinematic characteristics of electrons and protons in the magnetic reconnecting current sheet in the presence of a guide field are investigated. Particle trajectories are calculated for different values of the guide field by a test-particle calculation. The relationship between the final energy and the initial position has also been studied. We found that the addition of a guide field not only allows particles to get more energy and not only results in the separation of electrons and protons, but also causes the reconnecting electric field to selectively accelerate electrons and protons for different initial positions. The energy spectrum eventually obtained is the common power-law spectrum, and as the guide field increases, the index for the spectrum of electrons decreases rapidly. However, for a weak background magnetic field, proton spectra are not very sensitive to the guide field; but for a strong background field, the dependence of the spectrum index is similar to the electron spectrum. Meanwhile, kinematic characteristics of the accelerated particles in the current sheet including multiple X-points and O-points were also investigated. The result indicates that the existence of the multiple X- and O-points helps particles trapped in the accelerating region to gain more energy, and yields the double or multiple power-law feature. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Astronomy & Astrophysics |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | CORONAL MASS EJECTIONS ; PARTICLE-ACCELERATION ; MAGNETIC RECONNECTION ; SOLAR-FLARES ; ENERGY-SPECTRUM ; 2-RIBBON FLARES ; FIELD ; MODEL ; SEPARATION ; TURBULENCE |
| 收录类别 | SCI |
| 原文出处 | http://link.springer.com/article/10.1007%2Fs11207-012-9956-1 |
| 语种 | 英语 |
| WOS记录号 | WOS:000305130700006 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/6201]  |
| 专题 | 云南天文台_太阳物理研究组 |
| 作者单位 | 1.Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming, 650011, China 2.Graduate University of Chinese Academy of Sciences, Beijing, 10049, China 3.Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA, 02138, USA |
| 推荐引用方式 GB/T 7714 | Li Y,Lin J. Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points[J]. SOLAR PHYSICS,2012,279(1):91-113. |
| APA | Li Y,&Lin J.(2012).Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points.SOLAR PHYSICS,279(1),91-113. |
| MLA | Li Y,et al."Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points".SOLAR PHYSICS 279.1(2012):91-113. |
入库方式： OAI收割
来源：云南天文台
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