DOI: 10.1002/grl.50814
论文题名: Ion scales of quasi-perpendicular low-Mach-number interplanetary shocks
作者: Němeček Z. ; Šafránková J. ; Goncharov O. ; Přech L. ; Zastenker G.N.
刊名: Geophysical Research Letters
ISSN: 0094-8674
EISSN: 1944-8405
出版年: 2013
卷: 40, 期: 16 起始页码: 4133
结束页码: 4137
语种: 英语
英文关键词: interplanetary shock
; ion scale
; solar wind
Scopus关键词: Direct measurement
; Fast measurement
; Interplanetary shocks
; Ion inertial length
; Measurements of
; Quasi-perpendicular shocks
; Shock formation
; Shock parameters
; Shock waves
; Solar wind
; Ions
; heating
; ion
; measurement method
; plasma
; solar wind
; temperature effect
; theoretical study
英文摘要: A formation of low-Mach-number quasi-perpendicular shocks is expected to be well understood. From theoretical considerations as well as from observations, it follows that the shock ramp thickness would scale with the ion inertial length. We present analysis of 12 subcritical or marginally critical interplanetary shocks that reveals that (1) the ion transition scale determined from direct measurements of plasma moments (speed, temperature, and density) are of the same order as the ramp thickness determined from the magnetic field and (2) the ion transition scale is directly proportional to the ion thermal gyroradius, Rth; it was found to be ≈3.2 Rth in a broad range of solar wind and shock parameters. These results stress a role of the ion kinetics in the shock formation. Key Points Fast measurements of ion moments First direct detail measurements of the ion heating across IP shocks Ion scales of IP shocks proportional to proton thermal gyroradius. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84881650167&doi=10.1002%2fgrl.50814&partnerID=40&md5=2dc9888e741581589a195e1057465f52
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5938
Appears in Collections: 气候减缓与适应
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作者单位: Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, 180 00 Prague 8, Czech Republic
Recommended Citation:
Němeček Z.,Šafránková J.,Goncharov O.,et al. Ion scales of quasi-perpendicular low-Mach-number interplanetary shocks[J]. Geophysical Research Letters,2013-01-01,40(16).