Three-dimensional time-dependent fieldline reconnection

Details Three-dimensional time-dependent fieldline reconnection Three-dimensional time-dependent fieldline reconnection

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985sva....29..167s&link_type=abstract

(Astronomicheskii Zhurnal, vol. 62, Mar.-Apr. 1985, p. 291-300) Soviet Astronomy (ISSN 0038-5301), vol. 29, Mar.-Apr. 1985, p. 1

Astronomy and Astrophysics

Astronomy

Magnetic Field Configurations, Magnetohydrodynamics, Current Sheets, Discontinuity, Magnetohydrodynamic Waves, Time Dependence, Wave Propagation

Scientific paper

By specifying (a) the shape and motion of the reconnection line and (b) the electric field E in the diffusion zone as functions of time, a three-dimensional, time-dependent solution to Petschek's problem of magnetic-fieldline reconnection is obtained. A schematic outline of the reconnection process is suggested, relying on certain concepts as to the generation of the field E, the Alfven-wave propagation along the current sheet, and the breakup of an arbitrary MHD discontinuity. Petschek's criterion dictates the constraints which the diffusion-zone size imposes on the reconnection intensity. The parameters of the emission region (an auroral bulge in the ionosphere, the filaments in a solar flare) are crucial for the reconnection process.

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