Evolution of interplanetary slow shocks

Details Evolution of interplanetary slow shocks Evolution of interplanetary slow shocks

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93..251w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Jan. 1, 1988, p. 251-255.

Physics

15

Flow Velocity, Interplanetary Magnetic Fields, Magnetohydrodynamic Waves, Shock Waves, Solar Wind, Traveling Waves, Leading Edges, Shock Fronts, Stellar Mass Ejection

Scientific paper

The possible existence of traveling forward slow shocks, their global geometry, and their transition to forward fast shocks are investigated. A parametric study of the shocks in three-dimensional space shows that, in the region where the plasma beta value is of the order 0.1 or less, the jumps of all physical properties across a slow shock may vary over a wide range of magnitudes. In a region where the plasma beta value is of order one or more, the jumps in thermodynamic properties across a slow shock are small, but the jumps in field-related properties are not necessarily small. The onset of the transition process can occur in the region of interplanetary space where beta is less than 2/gamma or 1.2. During the transition, the amplitude of fluctuations in slow velocity and magnetic fields are large in the turbulent region behind the shock.

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