Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hell.confe..51m&link_type=abstract
"5th Hellenic Astronomical Conference, held 20-22 September, 2001 in Crete, Greece. Online at http://www.astro.auth.gr/elaset/he
Astronomy and Astrophysics
Astronomy
Scientific paper
Examination of Ulysses' observations during the spacecraft fly-by of Jupiter reveals the following picture for energetic ions in the Jovian outer (high latitude) dusk-side magnetosphere: (1) The ion flux decreases as Ulysses moves toward higher south latitudes; more intense decrease was detected at higher energies. (2) At middle latitudes, the energy spectrum is well described by a power law over the whole energy range (~60 - ~4000 keV) covered by the HI-SCALE instrument. At higher latitudes, the spectrum is softer and is composed by two parts described by different power laws. (3) The spectral shape varies periodically (5/10hr period). The observations are explained in terms of a periodic motion of the s/c within a large scale region of energetic ions in the outer magnetosphere with different characteristics from the magnetodisc plasma sheet.
Anagnostopoulos G. C.
Marhavilas Panagiotis K.
Sarris Emmanuel T.
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