中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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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