Other
Scientific paper
Sep 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992georl..19.1803d&link_type=abstract
Geophysical Research Letters (ISSN 0094-8276), vol. 19, no. 18, p. 1803-1806.
Other
48
Auroras, Hubble Space Telescope, Jupiter Atmosphere, Lyman Alpha Radiation, Ultraviolet Photography, Faint Object Camera, Particle Precipitation, Ultraviolet Emission
Scientific paper
We present here for the first time a Lyman-alpha image of the north polar region of Jupiter obtained with the Faint Object Camera on board the Hubble Space Telescope a few hours after the encounter of the ULYSSES spacecraft with Jupiter. The presence of high latitude regions of enhanced emission is clearly observed. A comparison with the location of the 'UVS oval', the Io (L = 6) and high-latitude field-line footprints shows that the best agreement is obtained with the L not less than 15 footprint and the UVS oval which are close to each other for the particular longitudinal sector observed. These two L-shells correspond to two possible sources of precipitation: particles originating respectively from the region of the plasma torus of Io in a distorted magnetic field or particles from the distant magnetosphere by analogy with the terrestrial aurora.
Dols Vincent
Gérard Jean-Claude
Paresce Francesco
Prangé Renee
Vidal-Madjar Alfred
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