Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points

	Acceleration of Electrons and Protons in Reconnecting Current Sheets Including Single or Multiple X-points
	Li Y(李燕)1,2 ; Lin J(林隽)1,3
刊名	SOLAR PHYSICS
	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
通讯作者	Li, Y (reprint author), Chinese Acad Sci, Yunnan Astron Observ, Kunming 650011, Peoples R China.
产权排序	第一完成单位
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.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
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
内容类型	期刊论文
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.