HR: 1340h
AN: SM33C-0465    [Abstracts]
TI: Generation Mechanism of S-Bursts at Jupiter and Earth: Initial Simulation Result
AU: * Su, Y
EM: yijiun@uta.edu
AF: University of Texas at Arlington, Department of Physics 502 Yates, Science Hall Rm 108 Box 19059, Arlington, TX 76019 United States
AU: Ergun, R E
EM: ree@fast.colorado.edu
AF: University of Colorado, Laboratory for Atmospheric and Space Physics 1234 Innovation Dr., Boulder, CO 80303 United States
AU: Bagenal, F
EM: Fran.Bagenal@lasp.colorado.edu
AF: University of Colorado, Laboratory for Atmospheric and Space Physics 1234 Innovation Dr., Boulder, CO 80303 United States
AU: Jones, S T
EM: Samuel.T.Jones.1@gsfc.nasa.gov
AF: NASA/Goddard Space Flight Center, Universities Space Research Association Code 692, Greenbelt, MD 20771 United States
AU: Parker, S E
EM: sparker@colorado.edu
AF: University of Colorado, Center for Integrated Plasma Studies Campus Box 390, Boulder, CO 80309 United States
AB: Measurements of S-bursts in decametric radio emissions from the Jovian ionosphere comprise less than 10% of the total observations. Recently, Ergun et al. [2005] and Su et al. [2005] explored a possible relationship between S-bursts and resonant Alfven waves in Jupiter's upper ionosphere. Electron acceleration or modulation may provide the physical mechanism that transfers energy from the Alfven wave to the S-burst. The modulated electron fluxes, in turn, may generate or modulate the generation of the S-burst emissions. The first Earth-based S-burst observation was presented by Ergun et al. [2005] with associated Alfven waves and electron acceleration signatures. In this presentation, we will present the first simulation result of electron distributions associated with Alfven waves at Jupiter and Earth using a linear gyrofluid model and a test particle method. Ergun, R. E., et al., S-Bursts and the Jupiter Ionospheric Alfven Resonator, J. Geophys. Res., in review, 2005. Su, Y.-J, et al., Io-Jupiter interaction: Alfven wave propagation and ionospheric Alfven, J. Geophys. Res., in review, 2005.
DE: 2451 Particle acceleration
DE: 2483 Wave/particle interactions (7867)
DE: 2736 Magnetosphere/ionosphere interactions (2431)
DE: 2753 Numerical modeling
DE: 2756 Planetary magnetospheres (5443, 5737, 6033)
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005