Fig. 6
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Volume emission rate profiles at a solar zenith angle of 0◦ for Raman-scattered Lyα photons, i.e. photons scattered from Lyα to 1280 Å by H2. These photons can be scattered again by H2 (Rayleigh scattering at 1280 Å) and contribute to the 1280 Å brightness of Uranus. The solid lines in the left and right panels show the absolute and cumulative volume emission rates, respectively, for the Raman-scattered Lyα photons in atmospheres with the three best-fit methane profiles that reproduce the observed Raman feature brightness of
R. The dashed lines indicate the altitude at which
for atmospheres with corresponding methane profile.
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