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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >'Crater' flux transfer events: Highroad to the X line?
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'Crater' flux transfer events: Highroad to the X line?

机译：“火山口”通量传输事件:公路X行吗?

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摘要

We examine Cluster observations of a so-called magnetosphere "crater FTE," employing data from five instruments (FGM, CIS, EDI, EFW, and WHISPER), some at the highest resolution. The aim of doing this is to deepen our understanding of the reconnection nature of these events by applying recent advances in the theory of collisionless reconnection and in detailed observational work. Our data support the hypothesis of a stratified structure with regions which we show to be spatial structures. We support the bulge-like topology of the core region (R3) made up of plasma jetting transverse to reconnected field lines. We document encounters with a magnetic separatrix as a thin layer embedded in the region (R2) just outside the bulge, where the speed of the protons flowing approximately parallel to the field maximizes: (1) short (fraction of a sec) bursts of enhanced electric field strengths (up to ～30 mV/m) and (2) electrons flowing against the field toward the X line at approximately the same time as the bursts of intense electric fields. R2 also contains a density decrease concomitant with an enhanced magnetic field strength. At its interface with the core region, R3, electric field activity ceases abruptly. The accelerated plasma flow profile has a catenary shape consisting of beams parallel to the field in R2 close to the R2/R3 boundary and slower jets moving across the magnetic field within the bulge region. We detail commonalities our observations of crater FTEs have with reconnection structures in other scenarios. We suggest that in view of these properties and their frequency of occurrence, crater FTEs are ideal places to study processes at the separatrices, key regions in magnetic reconnection. This is a good preparation for the MMS mission.
机译：我们检查集群的观察一个所谓的使用数据从磁气圈”陨石坑FTE。五个工具(女性生殖器切割、独联体、EDI、EFW和耳语),一些在最高分辨率。这样做是为了加深我们的理解这些事件的重新连接自然应用理论的最新进展无碰撞的重新连接和详细观察工作。假设的分层结构区域我们展示空间结构。支持bulge-like拓扑的核心区域(R3)等离子体喷射横向组成重新连接电场线。遇到一个磁分隔号薄层嵌在该地区(R2)外胀,质子的速度流动大约平行于字段最大化:(1)短期(sec)的分数的提高电场强度(~ 30 mV / m)和(2)电子对抗领域向X流动线几乎同时爆发强烈的电场。密度减少伴随的增强磁场强度。的核心地区,R3,电场的活动突然停止。配置文件有一个悬链线形状组成的在R2平行接近R2和R3边界和慢飞机移动磁场内隆起地区。共性的火山口,招聘我们的观察与重新连接结构在其他场景。属性和出现的频率,火山口,招聘是理想的地方学习过程分界线,磁的关键地区重新连接。MMS的使命。

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