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Abstract: Magnetic reconnection with asymmetry in the outflow direction occurs in theEarth-s magnetotail, coronal mass ejections, flux cancellation events,astrophysical disks, spheromak merging experiments, and elsewhere in nature andthe laboratory. A control volume analysis is performed for the case of steadyantiparallel magnetic reconnection with asymmetric downstream pressure, whichis used to derive scaling relations for the outflow velocity from each side ofthe current sheet and the reconnection rate. Simple relationships for outflowvelocity are presented for the incompressible case and the case of symmetricdownstream pressure but asymmetric downstream density. Asymmetry alone is notfound to greatly affect the reconnection rate. The flow stagnation point andmagnetic field null do not coincide in a steady state unless the pressuregradient is negligible at the flow stagnation point.



Autor: N. A. Murphy, C. R. Sovinec, P. A. Cassak

Fuente: https://arxiv.org/







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