HR: 1340h
AN: SH53A-1253    [Abstracts]
TI: Two-dimensional hybrid modeling of wave heating in the solar wind plasma
AU: * Ofman, L
EM: leon.ofman@gsfc.nasa.gov
AF: Catholic University of America, NASA GSFC Code 612.1, Greenbelt, MD 20771 United States
AU: Vinas, A
SH53A-1253 AF: NASA GSFC, Code 612.2, Greenbelt, MD 20771 United States
AB: We study the heating and the acceleration of protons, and heavy ions by waves in the solar wind, as well as the nonlinear influence of heavy ions on the wave structure using a 2D hybrid model. Protons and heavy ions are treated kinetically by solving their equations of motion in the self-consistent electric and magnetic fields of the waves, while electrons are treated as a neutralizing background MHD fluid. We use the 2D hybrid code to investigate more realistic obliquely propagating waves, boundary conditions, and background field structures, than previous 1D-simulation and analytical studies. Using the 2D hybrid code we consider for the first time the heating and acceleration of protons and heavy ions by a driven-input spectrum of Alfvén/cyclotron waves in the multi-species coronal plasma. We discuss the observational implication of the results to the solar wind, as well as the relation to the acceleration of stellar winds with hot magnetized coronae.
DE: 7807 Charged particle motion and acceleration
DE: 7827 Kinetic and MHD theory
DE: 7829 Kinetic waves and instabilities
DE: 7846 Plasma energization
DE: 7867 Wave/particle interactions (2483, 6984)
SC: SPA-Solar and Heliospheric Physics [SH]
MN: Fall Meeting 2005