Formation of self-organized shear structures in thin current sheets

	Formation of self-organized shear structures in thin current sheets
	Malova, H. V.; Mingalev, O. V.; Grigorenko, E. E.; Mingalev, I. V.; Melnik, M. N.; Popov, V. Yu.; Delcourt, D. C.; Petrukovich, A. A.; Shen, C.; Rong, Z. J.
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
	2015
卷号	120 期号:6 页码:4800-4824
关键词	magnetotail current sheet magnetic shear kinetic theory particle dynamics numerical modeling
ISSN号	2169-9380
通讯作者	Malova, HV (reprint author), Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
英文摘要	Self-consistent kinetic (particle-in-cell) model of magnetotail thin current sheet (TCS) is used to understand the formation of self-consistent sheared magnetic structures. It is shown that shear configurations appear in TCS as a result of self-consistent evolution of some initial magnetic perturbation at the current sheet center. Two general shapes of shear TCS components are found as a function of the transverse coordinate: symmetric and antisymmetric. We show that TCS formation goes together with the emergence of field-aligned currents in the center of the current sheet, as a result of north-south asymmetry of quasi-adiabatic ion motions. Ion drift currents can also contribute to the magnetic shear evolution, but their role is much less significant, their contribution depending upon the normal component B-z and the amplitude of the initial perturbation in TCS. Parametric maps illustrating different types of TCS equilibria are presented that show a higher probability of formation of symmetric shear TCS configuration at lower values of the normal magnetic component.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.nssc.ac.cn/handle/122/4600]
专题	国家空间科学中心_空间科学部
推荐引用方式 GB/T 7714	Malova, H. V.,Mingalev, O. V.,Grigorenko, E. E.,et al. Formation of self-organized shear structures in thin current sheets[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2015,120(6):4800-4824.
APA	Malova, H. V..,Mingalev, O. V..,Grigorenko, E. E..,Mingalev, I. V..,Melnik, M. N..,...&Zelenyi, L. M..(2015).Formation of self-organized shear structures in thin current sheets.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,120(6),4800-4824.
MLA	Malova, H. V.,et al."Formation of self-organized shear structures in thin current sheets".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 120.6(2015):4800-4824.