Physics
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990cath.rept.....w&link_type=abstract
Final Report, 1 Oct. - 31 Dec. 1989 Catholic Univ. of America, Washington, DC. Dept. of Mechanical Engineering.
Physics
Conservation Laws, Coronal Holes, Heavy Ions, Ion Temperature, Ions, Magnetohydrodynamic Flow, Rankine-Hugoniot Relation, Shock Waves, Solar Wind, Continuity Equation, Flow Distribution, Heating, Kinetic Energy, Magnetic Fields, Radii
Scientific paper
The coronal slow shock was predicted to exist embedded in large coronal holes at 4 to 10 solar radii. A three-fluid model was used to study the jumps in minor ions propertes across the coronal slow shock. The jump conditions were formulated in the de Hoffmann-Teller frame of reference. The Rankine-Hugoniot solution determines the MHD flow and the magnetic field across the shocks. For each minor ion species, the fluid equations for the conservation of mass, momentum, and energy can be solved to determine the velocity and the temperature of the ions across the shock. A simularity solution was also obtained for heavy ions. The results show that on the downstream side of the coronal slow shock the ion temperatures are nearly proportional to the ion masses for He, O, Si, and Fe in agreement with observed ion temperatures in the inner solar wind. This indicates that the possibly existing coronal slow shock can be responsible for the observed heating of minor ions in the solar wind.
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