Internal Sources of Jupiter's lyman alpha dayglow in non auroral regions

Details Internal Sources of Jupiter's lyman alpha dayglow in non auroral regions Internal Sources of Jupiter's lyman alpha dayglow in non auroral regions

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001dps....33.1803b&link_type=abstract

American Astronomical Society, DPS Meeting #33, #18.03; Bulletin of the American Astronomical Society, Vol. 33, p.1066

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Scientific paper

Recent models of the lyman alpha emission of Jupiter can take into account frequency redistribution and inhomogeneous atmosphere. The results of those calculations state that the lyman alpha solar flux causes the most part of the lyman alpha dayglow in non-auroral regions. The rest of the intensity is due to internal sources. We try to compute the other sources in those regions using this new radiative transfer model. To compute those sources, we need to know the concentrations of ionic species in the upper atmosphere of Jupiter. In order to do so, we have a model, which computes the concentration of ionic species in non-auroral regions, due to EUV solar flux. We have calculated the first interesting source: the electron proton recombination. This reaction should produce lyman alpha photons, because the hydrogen atom produced by this reaction, may transit by the level n=2. We calculate the rate of hydrogen atom, which transits by the second level after recombination using Seaton calculation of cascade transition in hydrogen atom. After those calculations we introduce the results in the radiative transfer model as internal sources and can see the importance of these sources. Those sources could explain an important part of the lyman alpha nightglow of Jupiter and could give us information on the Jovian ionosphere in non auroral regions

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