Energetic charged-particle phenomena in the Jovian magnetosphere - First results from the ULYSSES COSPIN collaboration

Details Energetic charged-particle phenomena in the Jovian magnetosphere - First results from the ULYSSES COSPIN collaboration Energetic charged-particle phenomena in the Jovian magnetosphere - First results from the ULYSSES COSPIN collaboration

Sep 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sci...257.1543s&link_type=abstract

Science (ISSN 0036-8075), vol. 257, no. 5076, Sept. 11, 1992, p. 1543-1550. Research supported by DARA, CEA, CNES, and SERC.

Physics

54

Charged Particles, Energetic Particles, Jupiter (Planet), Planetary Atmospheres, Planetary Magnetospheres, Ulysses Mission, Corotation, Field Aligned Currents, Nucleons, Planetary Magnetic Fields

Scientific paper

The Ulysses spacecraft made the first exploration of the region of Jupiter's magnetosphere at high Jovigraphic latitudes on the dusk side and reached higher magnetic latitudes on the day side than any previous mission to Jupiter. The cosmic and solar particle investigations (COSPIN) instrumentation achieved a remarkably well integrated set of observations of energetic charged particles in the energy ranges of about 1 to 170 megaelectron volts for electrons and 0.3 to 20 megaelectron volts for protons and heavier nuclei. The new findings include an apparent polar cap region in the northern hemisphere in which energetic charged particles following Jovian magnetic field lines may have direct access to the interplanetary medium; high-energy electron bursts on the dusk side that are apparently associated with field-aligned currents and radio burst emissions; persistence of the global 10-hour relativistic electron 'clock' phenomenon throughout Jupiter's magnetosphere; on the basis of charged-particle measurements, apparent dragging of magnetic field lines at large radii in the dusk sector toward the tail; and consistent outflow of megaelectron volt electrons and large-scale departures from corotation for nucleons.

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