Physics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9712283b&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. A8, Aug. 1, 1992, p. 12,283-12,286.
Physics
9
Shock Fronts, Shock Wave Propagation, Solar Corona, Solar Wind, Mathematical Models, Plasma Density, Solar Wind Velocity
Scientific paper
The effect of the coronal streamer belt on the propagation of a shock front in the solar wind is modeled. The model predicts a meridional deviation in the shock normal, resulting in a tendency for the shock normals to point toward the current sheet, which is straddled by the coronal streamer belt. Normals of eight shocks indpendently assessed to be within the expected range of influence of the belt are presented. Six of the eight shocks showed the predicted distortion. The null hypothesis would yield the same result in one out of 14 tries. The dimple shape induces a postshock confluence in the center of the belt of material pushed centerward from the top and bottom of the belt. It is suggested that this confluence of material might drive field line reconnection at the heliospheric current sheet in the center of the belt, as MHD simulations have observed.
Burton Marcia E.
Siscoe George L.
Smith Edward. J.
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