HR: 1330h
AN: SM13A-08    [Abstracts]
TI: Hybrid Simulations of Ion Cyclotron Waves at Io
AU: * Cowee, M M
EM: mcowee@igpp.ucla.edu
AF: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA 90095 United States
AU: Omidi, N
EM: omidi@scibernet.com
AF: SciberNet Inc., 777 Pacific Coast Highway Suite 108, Solana Beach, CA 92075 United States
AU: Russell, C T
EM: ctrussel@igpp.ucla.edu
AF: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA 90095 United States
AU: Strangeway, R J
EM: strange@igpp.ucla.edu
AF: Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Los Angeles, CA 90095 United States
AB: We study the evolution of ions picked up into a plasma flowing perpendicular to a background magnetic field using a 1D electromagnetic hybrid simulation code. Such a pickup geometry occurs in the Io plasma torus, where ions originating from volcanic activity on Io are mass loaded into the corotating plasma torus in the presence of a predominantly southward magnetic field. Free energy associated with this mass loading process leads to the generation of low amplitude ion cyclotron waves. Previously, dispersion analyses of the wave generation process at Io employed dispersion solvers which approximated the mass loaded ring distribution of ions with gaussian distributions. In this simulation ring beam ions are realistically simulated. We compare simulations of various ion species and loading rates with linear theory.
DE: 2152 Pickup ions
DE: 2159 Plasma waves and turbulence
DE: 2732 Magnetosphere interactions with satellites and rings
DE: 2753 Numerical modeling
SC: SPA-Magnetospheric Physics [SM]
MN: 2005 Joint Assembly