Simulation of a perpendicular bow shock

Details Simulation of a perpendicular bow shock Simulation of a perpendicular bow shock

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981georl...8.1269l&link_type=abstract

Geophysical Research Letters, vol. 8, Dec. 1981, p. 1269-1272.

Physics

133

Atmospheric Models, Bow Waves, Mach Number, Magnetoacoustic Waves, Shock Wave Propagation, Geomagnetism, Gyration, Particle Density (Concentration), Particle In Cell Technique, Particle Motion

Scientific paper

Simulations of a high-Mach-number shock with parameters typical of the earth's bow shock are performed. The simulations rely on a hybrid code in which the ions are treated kinetically using standard particle-in-cell techniques and the electrons are treated as a massless, charge neutralizing fluid. One spatial dimension and all velocity and field components are included in the calculation. The simulations reproduce the observed ion reflection and overshoots in the magnetic field and density, features that are shown to be closely associated with ion gyration. It is noted that gyrating ions play a crucial role in building up and maintaining overshoots in the potential, density, and magnetic field.

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