Kinematic reconnection at a magnetic null point: fan-aligned current

Details Kinematic reconnection at a magnetic null point: fan-aligned current Kinematic reconnection at a magnetic null point: fan-aligned current

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005gapfd..99...77p&link_type=abstract

Geophysical and Astrophysical Fluid Dynamics, vol. 99, Issue 1, p.77-93

Physics

Fluid Dynamics

29

Scientific paper

Magnetic reconnection at a three-dimensional null point is a natural extension of the familiar two-dimensional X-point reconnection. A model is set up here for reconnection at a null point with current directed parallel to the fan plane, by solving the kinematic, steady, resistive magnetohydrodynamic equations in its vicinity. The magnetic field is assumed to be steady, and a localised diffusion region surrounding the null point is also assumed, outside which the plasma is ideal. Particular attention is focussed on the way that the magnetic flux changes its connections as a result of the reconnection. The resultant plasma flow is found to cross the spine and fan of the null, and thus transfer magnetic flux between topologically distinct regions. Solutions are also found in which the flow crosses either the spine or fan only.

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