Fast magnetic field-line reconnexion in a compressible fluid. Part 1. Coplanar field lines
Fast magnetic field-line reconnexion in a compressible fluid. Part 1. Coplanar field lines
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DOI：
10.1017/s0022377800000325
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发表时间：
1982-10
影响因子：
2.5
通讯作者：
A. Soward;E. Priest
中科院分区：
文献类型：
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作者：
A. Soward;E. Priest
Soward 和 Priest 的早期论文为不可压缩再连接的 Petschek 模型奠定了坚实的数学基础，他们发现了该过程的“局部”相似解。本文将该分析扩展到可压缩重新连接，其中先前的阿尔芬波被关闭类型的慢磁声冲击所取代。与之前的建议相比，发现没有必要包括慢速冲击之前的中间波。最大重新连接速率通常是 Petschek 规定值的一半，尽管当外部气压足够低时可以实现更快的速率。
The Petschek model for incompressible reconnexion has been put on a firm mathematical foundation in an earlier paper by Soward & Priest, who discovered a ‘local’ similarity solution for the process. The present paper extends that analysis to compressible reconnexion, in which the previous Alfvén waves are replaced by slow magneto-acoustic shocks of switch-off type. By contrast with a previous suggestion, it is found unnecessary to include intermediate waves standing ahead of the slow shocks. The maximum reconnexion rate is typically half of Petschek's stated value, though faster rates are achieved when the external gas pressure is sufficiently low.