Jovian electron propagation in three dimensions of the heliosphere: The ULYSSES investigations

Details Jovian electron propagation in three dimensions of the heliosphere: The ULYSSES investigations Jovian electron propagation in three dimensions of the heliosphere: The ULYSSES investigations

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9821129s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A12, p. 21,129-21,144

Physics

23

Flux (Rate), Heliosphere, Interplanetary Medium, Jupiter (Planet), Planetary Magnetospheres, Relativistic Electron Beams, Three Dimensional Motion, Transport Properties, Bursts, Shock Wave Interaction, Spacecraft Trajectories, Ulysses Mission

Scientific paper

We report investigations of Jovian relativistic electrons in the interplanetary medium that provide new insights into both the physical processes by which the Jovian magnetosphere releases its trapped, relativistic electrons into the interplanetary medium, and the modes of their interplanetary propagation. These studies were dependent on the unique postencounter trajectory for Ulysses. The spacecraft remained close to the radial distance of Jupiter (approximately 5.2 AU) and moved southward on the duskside by only approximately 12 deg in heliographic latitude and less than 8 deg in the heliographic azimuth relative to Jupiter for the period of approximately 100 deg days of this study. During this period the nominal Parker spiral interplanetary magnetic field with its alternating polarities sector structure established direct magnetic field line connections frequently between Jupiter and the spacecraft. These unique conditions made it possible to investigate in detail, for approximately four solar rotations, both the Jovian electron burst phenomenon and the continuous, diffusive interplanetary propagation of Jovian electrons.

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