Abstract

A model for a strong plasma shock wave with a structure determined by ion wave instabilities has been developed. The magnetic field structure of the shock wave is further investigated and found to have many features in agreement with satellite observations of the earth's bow shock. A significant test for this model would be to observe the plasma density to jump through the bow shock on a length scale that is sometimes less than the thickness LB of the shock jump in the average magnetic field. It is also pointed out that the earth's bow shock may have a variable structure ranging from a thin ion-wave shock to relatively thick hydromagnetic shocks as conditions in the solar wind vary.

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