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arXiv 1503.01920astro-ph.SRphysics.plasm-phphysics.space-ph
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低β等离子体中快速重联中等离子体团的磁流体动力学结构:激波-激波相互作用

Magnetohydrodynamic structure of a plasmoid in fast reconnection in low-beta plasmas: Shock-shock interactions

Seiji Zenitani

摘要:

用二维磁流体力学方法研究了低β等离子体中磁重联中等离子体团的激波结构。使用具有前所未有的分辨率的高精度代码,冲击,不连续性及其交叉点得到解决和澄清。接触不连续性源自三重激波的交叉点,将不同来源的流体分开。等离子体团内部的冲击钻石似乎使超音速流减速。新的冲击钻石和一个缓慢的膨胀风扇内发现Petschek流出。新的冲击钻石的充分条件和天体物理喷流的相关性进行了讨论。

英文摘要:

The shock structure of a plasmoid in magnetic reconnection in low-beta plasmas is investigated by two-dimensional magnetohydrodynamic simulations. Using a high-accuracy code with unprecedented resolution, shocks, discontinuities, and their intersections are resolved and clarified. Contact discontinuities emanate from triple-shock intersection points, separating fluids of different origins. Shock-diamonds inside the plasmoid appear to decelerate a supersonic flow. New shock-diamonds and a slow expansion fan are found inside the Petschek outflow. A sufficient condition for the new shock-diamonds and the relevance to astrophysical jets are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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