气候变化领域集成服务门户(CCPortal): Polar Flattening of Jupiter's Magnetosphere

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DOI	10.1029/2020GL089818
	Polar Flattening of Jupiter's Magnetosphere
	Ranquist D.A.; Bagenal F.; Wilson R.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	Jupiter's magnetosphere is filled with plasma that expands from Io into an equatorial plasma disk, which preferentially inflates the magnetosphere against the solar wind equatorially. This results in a polar flattened magnetosphere and changes the dynamics between the solar wind and the magnetopause boundary. The degree of polar flattening at Jupiter, however, is not well known because no spacecraft has traversed the magnetopause at high latitudes. Instead, estimates must be made from much lower latitudes. In this study, we present a new method of estimating the large-scale shape of magnetospheres by using magnetic field draping within the magnetosheath. Utilizing data of Jupiter's dawn magnetosheath from the Juno spacecraft, we estimate the ratio of the semimajor to semiminor axes of the Jupiter-Sun-North Y-Z elliptical cross section of Jupiter's magnetopause is 1.29 ± 0.29. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Solar wind; Elliptical cross section; Equatorial plasma disk; High Latitudes; Jupiter's magnetosphere; Jupiters; Magnetosheaths; Magnetopause; Jupiter; magnetic field; magnetopause; magnetosphere; plasma; polar region; solar wind; spacecraft
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169935
作者单位	Laboratory for Atmospheric and Space Physics, University of Colorado Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Ranquist D.A.,Bagenal F.,Wilson R.J.. Polar Flattening of Jupiter's Magnetosphere[J],2020,47(16).
APA	Ranquist D.A.,Bagenal F.,&Wilson R.J..(2020).Polar Flattening of Jupiter's Magnetosphere.Geophysical Research Letters,47(16).
MLA	Ranquist D.A.,et al."Polar Flattening of Jupiter's Magnetosphere".Geophysical Research Letters 47.16(2020).