HR: 0830h
AN: SH21B-0158    [PDF]
TI: Simulations of Wave Particle Interactions in the Expanding Solar Wind in 1 and 2 Dimensions.
AU: * Velli, M
EM: velli@arcetri.astro.it
AF: Dept. of Astronomy and Space Science, University of Firenze, Largo E Fermi 2, Firenze, FI 50125 Italy
AU: * Velli, M
EM: velli@arcetri.astro.it
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109
AU: Hellinger, P
EM: helinger@ufa.cas.cz
AF: Dept. of Astronomy and Space Science, University of Firenze, Largo E Fermi 2, Firenze, FI 50125 Italy
AU: Hellinger, P
EM: helinger@ufa.cas.cz
AF: Institute for Atmospheric Physics, Bo?n¡ II 1401, Prague, 141 31
AU: Goldstein, B
EM: bruce.goldstein@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109
AU: Liewer, P
EM: paulett.liewer@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109
AB: We present hybrid simulations of the interaction of Alfv‚n and ion cyclotron waves with protons and helium in the accelerating solar wind using the expanding box model. We study how mirror force and wave-particle interactions compete in shaping the distribution function both for protons and minor ions for a range of initial fluctuation spectra and propagation directions in 1 and 2 dimensions. The simulations are discussed within the context of analytical and numerical models of the evolution of MHD turbulence in the outer corona and accelerating solar wind, with the aim of constraining the possible initial conditions leading to the observed in situ evolution.
DE: 7827 Kinetic and MHD theory
DE: 7871 Waves and instabilities
SC: SPA - Solar and Heliospheric Physics [SH]
MN: 2003 Fall Meeting