HR: 0800h
AN: SH31A-1157    [Abstracts]
TI: Ulysses COSPIN/KET and EPAC observations of Jovian electron bursts during the distant Jupiter encounter
AU: Heber, B
EM: bheber@uos.de
AF: Universit\"at Osnabr\"uck, Fachbereich Physik, Universit\"at Osnabr\"uck, Barbarastr. 7, Osnabr\"uck, 49069 Germany
AU: * Krupp, N
EM: krupp@linmpi.mpg.de
AF: MPI for Solar System Resarch, Max Planck Institute for Solar System Resarch, Max-Planck-Str. 2, Katlenburg-Lindau, 37191 Germany
AU: Rodriguez, L
EM: Rodriguez@linmpi.mpg.de
AF: MPI for Solar System Resarch, Max Planck Institute for Solar System Resarch, Max-Planck-Str. 2, Katlenburg-Lindau, 37191 Germany
AU: Blake, B
EM: bernie_blake@qmail2.aero.org
AF: Aerospace Corporation, Aerospace Corporation, Los Angeles, USA, Los Angeles, Ca 90009 United States
AU: Kunow, H
EM: kunow@kernphysik.uni-kiel.de
AF: CAU Kiel, Christian-Albrechts-Universit"at Kiel, 24118 Kiel, Germany, Kiel, 24118 Germany
AB: The Ulsses Energetic PArticles Composition instrument (EPAC) consists out of four detector heads and was designed to provide information on the flux, directional three-dimensional anisotropy as well as chemical composition of energetic particles in interplanetary space. Ions and electrons can be measured separately. During the mission it became evident that important informations about a few hundred keV electrons can be extracted from the four EPAC telescopes. The COSPIN/KET experiment on board Ulysses has been monitoring the flux of 3-20 MeV electrons in interplanetary space since the launch in October 1990. Between 1 and 10 AU Jovian, and galactic particles contribute continously to the few-MeV electron intensities. During it's recent descend to low latitudes the Ulysses spacecraft approached the planet Jupiter within 1~AU. However, in addition to the average intensity level well accounted for by diffusion, we report about very short duration electron events, which are called Jovian electron jets, characterized by: (i) a sharp increase and decrease of flux: (ii) a spectrum identical to the electron spectrum in the Jovian magnetosphere; and iii) a trong anisotropy. We compare our results with similar events, observed during the Jupiter flyby of Ulysses in 1992.
DE: 2104 Cosmic rays
DE: 2114 Energetic particles, heliospheric (7514)
DE: 2116 Energetic particles, planetary
SC: SPA-Solar and Heliospheric Physics [SH]
MN: 2004 AGU Fall Meeting