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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Asymmetric magnetic reconnection in the presence of a guide field
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Asymmetric magnetic reconnection in the presence of a guide field

机译：不对称中磁场重联的存在指导油田

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摘要

The properties of asymmetric magnetic reconnection in the presence of a guidemagnetic field are investigated using two-dimensional particle-in-cell simulations. Thereconnection process is initiated by applying a spatially localized and temporally steadyconvection electric field at the high-density/low-magnetic-field (magnetosheath) side ofthe current layer. The in-plane Hall currents are dominated by the electron flows along theseparatrices from the high-density to low-density side of the layer, and they stronglyenhance the out-of-plane magnetic field in one hemisphere and decrease it in the other. Onthe enhanced magnetic field side are situated a bipolar pair of parallel electric fields and anelectron velocity shear flow layer, both of which extend several ion inertia lengths (d1)away from the X line. The shear flow layer is unstable to the generation of small-scale(<
机译：不对称的磁重联的属性在存在guidemagnetic字段调查使用二维particle-in-cell模拟。过程是由应用空间局部和暂时steadyconvection电场的高密度/ low-magnetic-field(磁鞘)方当前层。电流是由电子流动从高密度theseparatrices低密度的层,他们stronglyenhance平面外磁场在另一个半球,减少它。在增强磁场是位于双极双平行电场和anelectron速度剪切流层,两个延长几个离子惯性长度(d1)从X线。代的小规模(< < di)电子漩涡远离X线和传播生产订单30%的减少字段的大小。大幅度,短期抑郁的确定在一个磁层穿越theTHEMIS飞船。B1c) y = 0是违反平行字段/速度剪切区域和偏差主要来自的散度电子压力张量。退磁的电子(大的值电子agyrotropy和洛伦兹比)发现characterizeneither立即吗电子X线和周边地区大电子shearflow地区。

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