Driven magnetic reconnection in three dimensions: Energy conversion and field‐aligned current generation
Driven magnetic reconnection in three dimensions: Energy conversion and field‐aligned current generation
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DOI：
10.1029/ja089ia11p09761
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发表时间：
1984-11
影响因子：
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通讯作者：
Tetsuya Sato;R. Walker;M. Ashour‐Abdalla
中科院分区：
文献类型：
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作者：
Tetsuya Sato;R. Walker;M. Ashour‐Abdalla
我们分析了三维驱动重联中的能量转换过程。特别地，我们研究了在尾状磁位形中局域重联过程中的能量转换过程。我们发现，三维驱动重联是一个强大的能量转换器，将磁能转换为等离子体流和热能。三维驱动重联是一种比二维重联更强大的能量转换器，因为在三维情况下，等离子体从侧面以及顶部和底部被吸引到重联区域。场向电流由三维驱动重联产生。我们已经确定了负责这些电流的物理机制，这些电流从尾部流向电离层的黎明侧的重联区域和从电离层流向尾部的黄昏侧。当中性片电流通过在重新连接的场线的外边缘（等离子体片的外边缘）上形成的慢冲击转向时，场对准电流形成。
We have analyzed the energy conversion processes occurring in three-dimensional driven reconnection. In particular, we studied the energy conversion processes during localized reconnection in a taillike magnetic configuration. We find that three-dimensional driven reconnection is a powerful energy converter which transforms magnetic energy into plasma bulk flow and thermal energy. Three-dimensional driven reconnection is an even more powerful energy converter than two-dimensional reconnection, because in the three-dimensional case, plasmas were drawn into the reconnection region from the sides as well as from the top and bottom. Field-aligned currents are generated by three-dimensional driven reconnection. We have identified the physical mechanism responsible for these currents which flow from the tail toward the ionosphere on the dawnside of the reconnection region and from the ionosphere toward the tail on the duskside. The field-aligned currents form as the neutral sheet current is diverted through the slow shocks which form on the outer edge of the reconnected field lines (outer edge of the plasma sheet).