Physics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983jgr....88.6926h&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 88, Sept. 1, 1983, p. 6926-6936.
Physics
30
Magnetohydrodynamic Flow, Magnetopause, Numerical Flow Visualization, Daytime, Magnetoresistivity, Magnetosheath, Mathematical Models, Plasma Sheaths, Rankine-Hugoniot Relation
Scientific paper
A numerical study is undertaken of the reconnection process at an interface where the total pressure is in balance, but where thermal pressure is higher on one side, in order to determine the basic characteristics of reconnection on the dayside magnetopause. While boundaries are assumed to be free, the reflection of perturbations originating from within the simulation region is suppressed by the position of an absorbing region. It is found that a slow shock is formed in the magnetosheath, while a slow expansion fan is formed in the magnetosphere. At the slow shock the Lorentz force and pressure gradient are of comparable importance in accelerating plasma, although at the expansion fan the pressure gradient has the dominant effect. Acceleration is noted to depend on the direction of the IMF.
Hoshino Masahiro
Nishida Akira
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