HR: 15:20h
AN: SM43A-05 INVITED     [Abstracts]
TI: REFORMATION OF PERPENDICULAR SHOCKS: 1-D VS 2-D SIMULATIONS
AU: * Hellinger, P
EM: petr.hellinger@ufa.cas.cz
AF: IAP, AS CR, Bocni II/1401, Prague, 14131, Czech Republic
AU: Travnicek, P
EM: trav@ufa.cas.cz
AF: IAP, AS CR, Bocni II/1401, Prague, 14131, Czech Republic
AU: Lembege, B
EM: bertrand.lembege@cetp.ipsl.fr
AF: CETP-IPSL-UVSQ, 10-12 Avenue de l'Europe, Velizy, 78140, France
AU: Savoini, P
EM: philippe.savoini@cetp.ipsl.fr
AF: CETP-IPSL-UVSQ, 10-12 Avenue de l'Europe, Velizy, 78140, France
AB: 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.
DE: 2753 Numerical modeling
DE: 4455 Nonlinear waves, shock waves, solitons (0689, 2487, 3280, 3285, 4275, 6934, 7851, 7852)
DE: 7851 Shock waves (4455)
DE: 7867 Wave/particle interactions (2483, 6984)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Joint Assembly