Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011astl...37..888g&link_type=abstract
Astronomy Letters, Volume 37, Issue 12, pp.888-893
Astronomy and Astrophysics
Astronomy
Mhd Shocks, Reverse Shocks, Magnetosheath, Solar Wind, Earth'S Magnetosphere, Magnetohydrodynamic Waves
Scientific paper
A possible mechanism for the generation of a reverse fast shock in the magnetosheath in the solar wind flow around the Earth's magnetosphere is considered. It is shown that such a shock can emerge through the breaking of a nonlinear fast magnetosonic compression wave reflected from the magnetopause toward the bow shock rear. In this case, the magnetopause is represented as a tangential discontinuity with a zero normal magnetic field component at it and the mechanism under consideration is assumed to be secondary with respect to the sudden disturbance of the bow shock-Earth's magnetosphere system by a nonstationary solar wind shock. A possible confirmation of the process under study by in-situ SC3 experimental observations of the bow shock front motion on the Cluster spacecraft is pointed out.
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