Physics – Plasma Physics
Scientific paper
Aug 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jplph..22....1u&link_type=abstract
Journal of Plasma Physics, vol. 22, Aug. 1979, p. 1-14.
Physics
Plasma Physics
29
Magnetic Field Configurations, Solar Magnetic Field, Stellar Magnetic Fields, Current Density, Graphs (Charts), Quantitative Analysis, Reynolds Number
Scientific paper
A series of numerical experiments is used to study the temporal dynamics of field-line reconnection. It is shown that (1) quasi-steady configurations, established according to variously imposed localized enhancements of resistivity, exactly describe the Petschek slow shock mechanism, (2) the reconnection rate, which is uniquely determined for each of the quasi-steady configurations, corresponds to the allowable maximum reconnection rate of Petschek-type configuration for the relevant magnetic Reynolds number, and (3) the reconnection efficiency is weakly dependent on the resistivity in the diffusion region. It is suggested that the fast reconnection process should be viewed as a gross instability, inherent to the current sheet system itself, that can be triggered by some local onset of anomalous resistivity.
Tsuda Teruhisa
Ugai Masayuki
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