4.4 Article

Formation of dipolarization fronts after current sheet thinning

期刊

PHYSICS OF PLASMAS
卷 25, 期 7, 页码 -

出版社

AIP Publishing
DOI: 10.1063/1.5030200

关键词

-

资金

  1. NSFC [41574153, 41431071, 41404133]

向作者/读者索取更多资源

Dipolarization front (DF)-a sharp boundary separating hot tenuous plasmas from cold dense plasmas-is a key structure responsible for particle acceleration and energy transport in the magnetotail. How such a structure is formed has been unclear so far. Two possible mechanisms suggested in previous studies are magnetic reconnection and spontaneous formation. Both of them require current sheet thinning as a prerequisite. However, observational evidence of the DF formation associated with current sheet thinning has not been reported. In this study, we present such an observation, showing the DF formation after current sheet thinning. We estimate the half thickness of the current sheet to be similar to 1000 km and the rate of current sheet thinning as similar to 38 km/s. We find that the DF is likely formed at X-GSM approximate to -20 R-E. During the current sheet thinning, the plasma becomes cold and dense; during DF formation, many magnetic islands are produced. Although current sheet thinning and DF formation have been individually analyzed in the previous studies, this study, for the first time, links the two transient processes in the magnetotail. Published by AIP Publishing.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据