Ulysses COSPIN/KET Observations of Jovian Electron Bursts During the Distant Jupiter Encounter

Details Ulysses COSPIN/KET Observations of Jovian Electron Bursts During the Distant Jupiter Encounter Ulysses COSPIN/KET Observations of Jovian Electron Bursts During the Distant Jupiter Encounter

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004agusmsh23a..01h&link_type=abstract

American Geophysical Union, Spring Meeting 2004, abstract #SH23A-01

Physics

2114 Energetic Particles, Heliospheric (7514), 2116 Energetic Particles, Planetary, 6220 Jupiter, 7859 Transport Processes

Scientific paper

The COSPIN/KET experiment on-board Ulysses has been monitoring the flux of 3-20 MeV electrons in interplanetary space since 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 Jupiter to less than 1~AU. However, in addition to the average intensity level well accounted for by diffusion, we report in this contribution 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 strong anisotropy. The results are compared with similar events observed during the Jovian close flyby in 1992.

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