Oblique Interaction of Strong Solar Wind Discontinuities in the Vicinity of the Terrestrial Magnetosphere
The interaction of a solar wind shock perturbation (fast shock wave or rotational discontinuity) with the bow shock wave front upstream from the magnetosphere of the Earth is considered in the ideal MHD approximation. It is shown that as the shock perturbation propagates along the bow front the character of the flow is qualitatively and quantitatively modified, being asymmetrical on the flanks. The effect of the interplanetary magnetic field orientation and the obliqueness of the arriving solar wind shock perturbation on this process is studied. It is found that there is some kind of similarity with the kinetic description of the bow front as partly quasiperpendicular and partly quasiparallel.
KeywordsSolar wind shock waves Earth’s bow shock Rotational discontinuity
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