Structural relations for time-dependent intermediate shocks

Details Structural relations for time-dependent intermediate shocks Structural relations for time-dependent intermediate shocks

Oct 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.2087w&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 20, p. 2087-2090.

Physics

15

Cauchy Problem, Magnetohydrodynamic Waves, Shock Waves, Space Plasmas, Time Dependence, Magnetopause, Rankine-Hugoniot Relation, Solar Wind

Scientific paper

A quantitative description of time-dependent (MHD) intermediate shocks is formulated. In non-coplanar Riemann problems, time-dependent 2 yields 3 intermediate shocks evolve in time as a localized self-similar structure whose strength decreases as 1/sq rt t, and whose width expands as sq rt t. We derive structural relations, similar to Rankine-Hugoniot relations, between the plasma properties and the magnitude of the transverse magnetic field, which we hope can help identify time-dependent 2 yields 3 intermediate shocks at the magnetopause, in the solar wind, and elsewhere in space. The analytic forms of the structural relations agree with our numerical results.

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