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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Solar wind plasma entry observed by cluster in the high-latitude magnetospheric lobes
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Solar wind plasma entry observed by cluster in the high-latitude magnetospheric lobes

机译：太阳风等离子体入口观察到集群中高纬度磁性层的叶

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摘要

Using the Cluster data during the period from January to April between 2001 and 2006, we find an observation of solar wind entry due to magnetic reconnection occurred in the terrestrial high-latitude magnetospheric lobes, tailward of the cusps under northward interplanetary magnetic field (IMF). Occurrence rate of solar wind entry events in this study is of the same order as that for the Cluster orbital interval from August to October between the years of 2002 and 2004 as reported by Shi et al. (2013). In this paper, we further study the role of the IMF B_x and B_y components in the control of solar wind plasma entry based on the investigations of different magnetic dipole tilt variations between our database and Shi et al. (2013). This study shows that the asymmetry distribution of solar wind entry events in the northern and southern lobes could be caused by the variation of magnetic dipole tilt, which could influence the locations of the reconnection site on the high-latitude lobe magnetopause. On the other hand, IMF B_x can also affect the solar wind plasma entry rate, which is also consistent with previous results. Therefore, we conclude that the "north-south asymmetry" of solar wind entry events in the lobes could be the combined result of magnetic dipole tilt and IMF B_x. In addition, the IMF B_y component can influence the entry events in conjunction with the variation of IMF B_x component, which is in line with the Parker Spiral of the IMF.
机译：使用集群数据期间1月至4月在2001年和2006年之间,我们发现由于太阳风的观察条目磁重联发生在地面高纬度磁性层的叶,tailward的向北行星际磁场下的尖点字段(IMF)。事件在这个研究是相同的顺序从8月到集群轨道区间10月在2002年和2004年之间据史et al .(2013)。提出进一步研究国际货币基金组织的角色和的话在太阳风等离子体的控制组件基于调查不同的条目磁偶极子之间的倾斜变化数据库和施et al .(2013)。太阳风的不对称分布北部和南部叶输入事件可能是由于磁场的变化吗偶极子倾斜,这可能影响到的位置重新连接的站点在高纬度地区叶磁层。也会影响太阳风等离子体入口速度,这也与以前的结果一致。因此,我们得出这样的结论:“南北太阳风进入事件的不对称”叶可能是由于磁相结合偶极子倾斜和国际货币基金组织提出。组件可以影响事件的条目与国际货币基金组织提出的变化组件,它是符合帕克国际货币基金组织(IMF)的螺旋。

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