Reformation of Perpendicular Shocks: 1-D VS 2-D Simulations

Details Reformation of Perpendicular Shocks: 1-D VS 2-D Simulations Reformation of Perpendicular Shocks: 1-D VS 2-D Simulations

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agusmsm43a..05h&link_type=abstract

American Geophysical Union, Spring Meeting 2007, abstract #SM43A-05

Physics

2753 Numerical Modeling, 4455 Nonlinear Waves, Shock Waves, Solitons (0689, 2487, 3280, 3285, 4275, 6934, 7851, 7852), 7851 Shock Waves (4455), 7867 Wave/Particle Interactions (2483, 6984)

Scientific paper

Perpendicular shocks simulated using 1-D both hybrid and PIC codes are strongly non-stationary (exhibit self-reformation process) for a wide range of upstream parameters (low proton beta and/or high Mach numbers). We present new 2-D simulation results using both hybrid and PIC codes of the perpendicular shocks and compare them with the corresponding 1-D simulations. One striking feature observed in the simulations is that shocks which are self-reforming in 1-D reveal to be almost stationary in 2-D and their foot region is dominated by whistler waves propagating obliquely with respect to the shock normal and to the magnetic field. These simulations indicate that the emitted whistler waves inhibit the self-reformation process.

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