The role of intermediate shocks in magnetic reconnection

Details The role of intermediate shocks in magnetic reconnection The role of intermediate shocks in magnetic reconnection

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19..229l&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, Feb. 7, 1992, p. 229-232.

Physics

23

Cauchy Problem, Current Sheets, Magnetic Field Reconnection, Plasma Density, Shock Wave Propagation, Magnetopause, Magnetosheath, Rankine-Hugoniot Relation

Scientific paper

The present study examines the structure of discontinuity layers associated with magnetic reconnection by numerically solving the Riemann problem for the evolution of an initial current sheet which separates two plasma regions with antiparallel magnetic field components in the z direction and a common guide magnetic field in the y direction. In the presence of a nonzero normal component of the magnetic field, the initial current sheet evolves into a system of MHD discontinuities. For the initial current sheet with a zero guide field, steady intermediate shocks, slow shocks, slow expansion waves, or contact discontinuity are observed to develop. For the current sheet with a nonzero guide field, time-dependent intermediate shocks, instead of steady intermediate shocks, are observed to bound the reconnection layer.

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