Generation Mechanism of S-Bursts at Jupiter and Earth: Initial Simulation Result

Details Generation Mechanism of S-Bursts at Jupiter and Earth: Initial Simulation Result Generation Mechanism of S-Bursts at Jupiter and Earth: Initial Simulation Result

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005agufmsm33c0465s&link_type=abstract

American Geophysical Union, Fall Meeting 2005, abstract #SM33C-0465

Physics

2451 Particle Acceleration, 2483 Wave/Particle Interactions (7867), 2736 Magnetosphere/Ionosphere Interactions (2431), 2753 Numerical Modeling, 2756 Planetary Magnetospheres (5443, 5737, 6033)

Scientific paper

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.

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