Direct evidence for a three-dimensional magnetic flux rope flanked by two active magnetic reconnection X lines at Earth's magnetopause.
Direct evidence for a three-dimensional magnetic flux rope flanked by two active magnetic reconnection X lines at Earth's magnetopause.
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DOI：
10.1103/physrevlett.107.165007
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发表时间：
2011-10
影响因子：
8.6
通讯作者：
M. Øieroset;T. Phan;J. Eastwood;Masaki Fujimoto;W. Daughton;M. Shay;V. Angelopoulos;F. Mozer;J. Mcfadden;D. Larson;K. Glassmeier
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文献类型：
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作者：
M. Øieroset;T. Phan;J. Eastwood;Masaki Fujimoto;W. Daughton;M. Shay;V. Angelopoulos;F. Mozer;J. Mcfadden;D. Larson;K. Glassmeier
我们报告了三艘 THEMIS 航天器对磁通绳的直接探测，磁通绳两侧有两条主动 X 线，在磁通绳中心附近产生碰撞等离子体射流。观察到的磁力绳内部的密度损耗和开放磁场拓扑揭示了重要的三维效应。还有证据表明磁通绳芯内存在非热电子激励，其中 1-4 keV 超热电子的通量高于会聚重联射流中的通量。观察到的离子和电子能量与当前的理论预测不同。
We report the direct detection by three THEMIS spacecraft of a magnetic flux rope flanked by two active X lines producing colliding plasma jets near the center of the flux rope. The observed density depletion and open magnetic field topology inside the flux rope reveal important three-dimensional effects. There was also evidence for nonthermal electron energization within the flux rope core where the fluxes of 1-4 keV superthermal electrons were higher than those in the converging reconnection jets. The observed ion and electron energizations differ from current theoretical predictions.