Physics
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm41b1670h&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SM41B-1670
Physics
2704 Auroral Phenomena (2407), 2712 Electric Fields (2411), 2732 Magnetosphere Interactions With Satellites And Rings, 7815 Electrostatic Structures, 7845 Particle Acceleration
Scientific paper
The Jovian S-bursts are bursty decameter emissions related to the Io-Jupiter interaction. A typical S-bursts is an emission with a duration of some tens of millisecond which presents a characteristic drift in frequency. It can be related to the presence of electron beams in adiabatic motion above the Io FootPrint. However an S-burst storm presents many discreet structures, which repeat with a quasi-period of few Hertz and whose shape can sensibly differ from the most typical one. We show that these characteristics reveal the dynamical processes in the vicinity of the Io FootPrint, such as acceleration by Alfvén waves, electric potential drops, ion and electron holes... Simulations of the emissions related to the presence of all these acceleration processes will be presented and compared to observations.
Hess Sebastian
Mottez Fabrice
Zarka Ph.
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