HR: 1340h
AN: SH33B-0373    [Abstracts]
TI: Hybrid Simulation of Plasma Stretching
AU: * Travnicek, P
EM: trav@alenka.ufa.cas.cz
AF: Institute of Atmospheric Physics, ASCR, Bocni II/1401, Prague, 14131 Czech Republic
AU: Hellinger, P
EM: Petr.Hellinger@ufa.cas.cz
AF: Institute of Atmospheric Physics, ASCR, Bocni II/1401, Prague, 14131 Czech Republic
AB: We simulate an impact of slow plasma stretching on the ULV turbulence and the proton temperature anisotropy. We use a modified hybrid code where physical sizes of the simulation box increase during the time. The simulation starts with a homogeneous, stable plasma. First, the evolution is double adiabatic one, later, as the plasma gets more stretched and unstable to AIC instability, an important ULF turbulence appears. The plasma-ULV waves system stays close to the marginal stability and we find an anticorrelation between proton beta and temperature anisotropy. We discuss the results and compare them with in situ observations.
DE: 2753 Numerical modeling
DE: 7800 SPACE PLASMA PHYSICS
DE: 7829 Kinetic waves and instabilities
DE: 7867 Wave/particle interactions (2483, 6984)
DE: 7868 Wave/wave interactions
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005