Polar and Cluster observations of a dayside inverted-V during conjunction
Polar and Cluster observations of a dayside inverted-V during conjunction
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合期间日面倒V形的极地和星团观测
DOI：
10.5194/angeo-25-543-2007
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Y. Khotyaintsev
中科院分区：
文献类型：
--
作者：
J. Menietti;R. Frahm;A. Korth;F. Mozer;Y. Khotyaintsev
我们调查粒子和字段数据在极地和集群航天器的连接。这种结合发生在向阳面的尖点边界层附近时，向阳面的倒V型观测到的粒子数据的两颗卫星。电子，离子，电场和磁场数据从每颗卫星证实，向阳面倒V（DSIV）结构存在于两颗卫星的位置和电场持续从极地（较低）航天器的高度到集群航天器的高度。我们观察到加速，沉淀电子和向上离子沿磁场沿着。此外，Polar和Cluster观测到的垂直于环境磁场的大振幅电场表明，这些事件与重要的平行电场有关。对于Polar航天器观测到的类似DSIV事件，已观测到等离子体波（确定为可能的阿尔芬波）沿磁场线沿着两个方向传播。未来的连接将是必要的，以确认DSIV与重连网站。
We investigate particle and fields data during a conjunction of the Polar and Cluster spacecraft. This conjunction occurs near the dayside cusp boundary layer when a dayside inverted-V was observed in the particle data of both satellites. Electron, ion, electric field, and magnetic field data from each satellite confirm that the dayside inverted-V (DSIV) structure is present at the location of both satellites and the electric fields persist from the altitude of the Polar (lower) spacecraft to the altitude of the Cluster spacecraft. We observe accelerated, precipitating electrons and upward ions along the magnetic field. In addition, large amplitude electric fields perpendicular to the ambient magnetic field seen by Polar and by Cluster suggest significant parallel electric fields associated with these events. For similar DSIV events observed by the Polar spacecraft, plasma waves (identified as possible Alfven waves) have been observed to propagate in both directions along the magnetic field line. Future conjunctions will be necessary to confirm that DSIVs are associated with reconnection sites.