Magnetic field-line reconnexion by localized enhancement of resistivity. II - Quasi-steady process

Details Magnetic field-line reconnexion by localized enhancement of resistivity. II - Quasi-steady process Magnetic field-line reconnexion by localized enhancement of resistivity. II - Quasi-steady process

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977jplph..18..451t&link_type=abstract

Journal of Plasma Physics, vol. 18, Dec. 1977, p. 451-471. Research supported by Nagoya University.

Computer Science

Numerical Analysis

31

Electrical Resistivity, Lines Of Force, Magnetic Field Configurations, Magnetohydrodynamic Stability, Plasma Diffusion, Boundary Value Problems, Compression Waves, Energy Transfer, Numerical Analysis, Numerical Stability, Propagation Modes

Scientific paper

The evolution of magnetic field-line reconnection has been observed to be a significant factor in magnetic energy release and topological reconfiguration in various types of solar and astrophysical phenomena. Numerical calculations show that when the system reaches a quasi-steady state, the evolution is eventually checked. The quasi-steady configuration yielded by an initially antiparallel magnetic field explains MHD properties characteristic of the diffusion, field reversal, and external regions, and their interdependence. It is felt that the principal cause for the present reconnection process is the bending of the field lines toward the magnetic neutral point. This results from locally enhanced resistivity thought to be in the diffusion region. It is noted that the dominant process in the external region corresponds to a fast mode expansion, and that variations in flow properties across the boundary of the field reversal region agree with those necessary for a slow-mode compression wave.

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