NSSC OpenIR  > 其他部室
Energy filter effect for solar wind particle entry to the plasma sheet via flank regions during southward interplanetary magnetic field
Zhou, X. Z.; Pu, Z. Y.; Zong, Q. G.; Xie, L.; 北京8701信箱
Department其他
Source PublicationJournal of Geophysical Research-Space Physics
2007
Volume112Issue:A6Pages:A06233
ISSN0148-0227
Language英语
KeywordKelvin-helmholtz Instability Tangential Discontinuity Geotail Observations Magnetosphere Magnetopause Magnetotail Boundary Model Ions
AbstractSeveral mechanisms have been used to explain solar wind plasma entry into the plasma sheet in the magnetotail. In this paper, we focus on the gradient drift entry (GDE) process in the equatorial flanks of the magnetosphere, based on the magnetopause picture of a tangential discontinuity with a small tangential electric field as was suggested by Alfven (1968). We discuss the GDE efficiency in different conditions using the adiabatic theory. It can be clearly shown that the GDE efficiency is much lower during southward interplanetary magnetic field (IMF), with a strong energy filter effect for incoming solar wind particles. Given a typical condition, a critical energy for particle entry is calculated to be several kiloelectron volts. Only those particles with higher energy can penetrate the magnetopause, a condition which can be also proved by test particle simulations. The lower efficiency than that during northward IMF during periods of southward IMF is in agreement with the different properties of the plasma sheet observed, i.e., hot and tenuous when the IMF is southward, cold and dense for northward IMF.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1688
Collection其他部室
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
Zhou, X. Z.,Pu, Z. Y.,Zong, Q. G.,et al. Energy filter effect for solar wind particle entry to the plasma sheet via flank regions during southward interplanetary magnetic field[J]. Journal of Geophysical Research-Space Physics,2007,112(A6):A06233.
APA Zhou, X. Z.,Pu, Z. Y.,Zong, Q. G.,Xie, L.,&北京8701信箱.(2007).Energy filter effect for solar wind particle entry to the plasma sheet via flank regions during southward interplanetary magnetic field.Journal of Geophysical Research-Space Physics,112(A6),A06233.
MLA Zhou, X. Z.,et al."Energy filter effect for solar wind particle entry to the plasma sheet via flank regions during southward interplanetary magnetic field".Journal of Geophysical Research-Space Physics 112.A6(2007):A06233.
Files in This Item: Download All
File Name/Size DocType Version Access License
2007112A6A06233.pdf(383KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhou, X. Z.]'s Articles
[Pu, Z. Y.]'s Articles
[Zong, Q. G.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhou, X. Z.]'s Articles
[Pu, Z. Y.]'s Articles
[Zong, Q. G.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou, X. Z.]'s Articles
[Pu, Z. Y.]'s Articles
[Zong, Q. G.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: 2007112A6A06233.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.