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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.; Zelenyi, L. M.; Malova, HV (reprint author), Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
Department空间科学部
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
2015
Volume120Issue:6Pages:4800-4824
ISSN2169-9380
Language英语
KeywordMagnetotail Current Sheet Magnetic Shear Kinetic Theory Particle Dynamics Numerical Modeling
AbstractSelf-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.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/4600
Collection空间科学部
Corresponding AuthorMalova, HV (reprint author), Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow, Russia.
Recommended Citation
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..,...&Malova, HV .(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.
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