HR: 1340h
AN: P23A-0240    [Abstracts]
TI: Planetary Foreshock Radio Emissions
AU: Kuncic, Z
EM: z.kuncic@physics.usyd.edu.au
AF: University of Sydney, School of Physics, Sydney, NSW 2006 Australia
AU: * Cairns, I H
EM: cairns@physics.usyd.edu.au
AF: University of Sydney, School of Physics, Sydney, NSW 2006 Australia
AB: The electron foreshock regions upstream of Earth's bow shock and of travelling interplanetary shocks are known to produce strong radio emissions. A quantitative theoretical model has been developed for radio emissions from the terrestrial foreshock and for coronal and interplanetary type II radio bursts. Here, we present a detailed comparison between the predicted and observed levels of terrestrial foreshock radio emission. We also generalize the theoretical model to other planetary foreshocks, and we compare the predicted levels of radio emissions from the foreshocks of other planets to that from Earth's. Contrary to some expectations, our theoretical results predict exceptionally strong radio emissions from Mercury's foreshock, in particular, and relatively weak emissions from the Jovian and Saturnian foreshocks. These predictions will be testable with forthcoming space missions such as Messenger and Beppi Colombo, as well as existing missions like Galileo and Cassini.
DE: 7871 Waves and instabilities
DE: 6984 Waves in plasma
DE: 2116 Energetic particles, planetary
DE: 2154 Planetary bow shocks
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting