Fast magnetic reconnection in the plasmoid-dominated regime.
Fast magnetic reconnection in the plasmoid-dominated regime.
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DOI：
10.1103/physrevlett.105.235002
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发表时间：
2010-08
影响因子：
8.6
通讯作者：
D. Uzdensky;N. Loureiro;A. Schekochihin
中科院分区：
文献类型：
--
作者：
D. Uzdensky;N. Loureiro;A. Schekochihin
提出了一个通过随机等离子体团链的电阻性磁场重联的概念模型。全球重连率被证明是独立的Lundquist数。等离子体团中的通量分布符合平方反比定律。有人认为，有一个有限的概率出现异常大的等离子体团，这可能会破坏链（并可能是负责可观察到的大型突发事件，在太阳耀斑和耀斑崩溃）。提供了从电阻磁流体力学过渡到无碰撞制度的标准。
A conceptual model of resistive magnetic reconnection via a stochastic plasmoid chain is proposed. The global reconnection rate is shown to be independent of the Lundquist number. The distribution of fluxes in the plasmoids is shown to be an inverse-square law. It is argued that there is a finite probability of emergence of abnormally large plasmoids, which can disrupt the chain (and may be responsible for observable large abrupt events in solar flares and sawtooth crashes). A criterion for the transition from the resistive magnetohydrodynamic to the collisionless regime is provided.