Collisionless magnetic reconnection via alfvén eigenmodes

Lei Dai

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33 Scopus citations

Abstract

We propose an analytic approach to the problem of collisionless magnetic reconnection formulated as a process of Alfvén eigenmodes' generation and dissipation. Alfvén eigenmodes are confined by the current sheet in the same way that quantum mechanical waves are confined by the tanh 2 potential. The dynamical time scale of reconnection is the system scale divided by the eigenvalue propagation velocity of the n=1 mode. The prediction of the n=1 mode shows good agreement with the in situ measurement of the reconnection-associated Hall fields.

Original languageEnglish (US)
Article number245003
JournalPhysical Review Letters
Volume102
Issue number24
DOIs
StatePublished - Jun 19 2009

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