HR: 1340h
AN: SM53A-1083    [Abstracts]
TI: The Jovian Radiation-Belt Emission: Features and Time Variability.
AU: * Bolton, S J
EM: sbolton@swri.edu
AF: Space Science Department, SwRI, San Antonio, Tx 78238, United States
AU: Santos-Costa, D
EM: dsantoscosta@swri.edu
AF: Space Science Department, SwRI, San Antonio, Tx 78238, United States
AU: Thorne, R M
EM: rmt@atmos.ucla.edu
AF: Department of Atmospheric and Oceanic Sciences, UCLA, Los Angeles, Ca 90095, United States
AU: Miyoshi, Y
EM: miyoshi@stelab.nagoya-u.ac.jp
AF: Solar-Terrestrial Environment Laboratory, Nagoya University, Nagoya, 464-8601, Japan
AU: Levin, S M
EM: steven.levin@jpl.nasa.gov
AF: Jet Propulsion Laboratory, Oak Grove Drive, Pasadena, Ca 91109, United States
AB: We present new results that identify the role of various physical mechanisms in explaining the distribution of high energy electrons trapped in Jupiter's inner radiation belts. Our results indicate the inner radiation belts are linked to processes very close to the planet (such as the ring system and inner satellites) and more distant phenomena (such as that ongoing in the outer magnetosphere and magnetotail). Short term variations in the radiation belts may be a proxy to processes linked to variability in Jupiter's ring system (as observed by New Horizons), whereas long term variations may be linked to distant solar wind interactions with Jupiter. Using a newly modified model and comparing to the observed features in Jupiter's synchrotron emission, we investigate the long- and short-term variations, the brightness distribution, beaming curve and radio spectrum. Specific implications on the importance of phenomena taking place in the inner magnetosphere (interactions with moons and dust, synchrotron mechanism and particle transport) are reported. Mechanisms linked to solar activity and potentially responsible for temporal changes in the Jovian decimetric emission will also be discussed.
DE: 2744 Magnetotail
DE: 2756 Planetary magnetospheres (5443, 5737, 6033)
DE: 5443 Magnetospheres (2756)
DE: 5737 Magnetospheres (2756)
SC: SPA-Magnetospheric Physics [SM]
MN: 2007 Fall Meeting