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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Slow shock formation and structure with sub-Alfvénic shear flow in magnetic reconnection
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Slow shock formation and structure with sub-Alfvénic shear flow in magnetic reconnection

机译:慢激波形成和结构在磁重联sub-Alfvenic剪切流

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摘要

Slow shock formation and structure associated with magnetic reconnection are investigated in the presence of sub-Alfvénic shear flow using a compressible resistive MHD model. It is found for the first time that one or two pairs of the slow shocks are formed in the inflow region away from the reconnection separatrices within compressible resistive MHD. The distributions of the slow shocks depend largely on the plasma beta and the shear flow velocity that lead to the increase of magnetic reconnection rate. One pair of the slow shocks is formed for β=0.2 and two pairs of the slow shocks are generated for β=1.0 with the shear flow velocity in the range 0.6 V _A to 0.9 V _A. For high plasma beta (β=5.0), there is no slow shock formed outside the reconnection separatrices. The results can be applied to interpret slow shock observations at the dayside magnetopause.
机译:慢激波形成和结构有关研究了磁场重联的sub-Alfvenic剪切流使用的存在可压缩电阻磁流体动力模型。第一次一个或两双慢流入地区远离形成冲击在可压缩重新连接的分界线电阻磁流体动力。很大程度上取决于等离子体β和冲击剪切流导致的增加的速度磁重联率。冲击形成的β= 0.2,两双缓慢的冲击产生的β= 1.0剪切流速范围在0.6 V至0.9V _A。慢激波形成在重新连接分界线。解释的光面减缓冲击观察磁层。

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