The Lyman alpha bulge of Jupiter: Effects of non-thermal velocity field

Details The Lyman alpha bulge of Jupiter: Effects of non-thermal velocity field The Lyman alpha bulge of Jupiter: Effects of non-thermal velocity field

Apr 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993georl..20..747j&link_type=abstract

Geophysical Research Letters, Volume 20, Issue 8, p. 747-750

Physics

Scientific paper

In this preliminary study, we outline for the first time the effect of non-thermal line broadening processes (turbulence, random waves, convection) on the shape and intensity of the H Ly-α line resonance scattered from the atmosphere of Jupiter and we show how a non-thermal velocity field, confined to the bulge region, in the upper atmosphere of Jupiter, may account for most of the H Ly-α bulge features. Both the shape and the brightness of the Ly-α line from the bulge region as reported by the IUE instrument and the Voyager UV Spectrometer can be recovered assuming resonant scattering with a total atomic hydrogen [H]~4×1017 cm-2, and a non-thermal component [H]~2×1015 cm-2 above the thermopause.

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