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Astron. Astrophys. 358, 353-367 (2000)
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Angle dependent partial frequency redistribution in the interplanetary medium at Lyman ![[FORMULA]](img1.gif)
E. Quémerais
Service d'Aéronomie du CNRS, B.P. 3, 91371 Verrières le Buisson, France (eric.quemerais@aerov.jussieu.fr)
Received 21 January 2000 / Accepted 31 March 2000
Abstract
We present here the results of a model of multiple scattering at
Lyman ![[FORMULA]](img2.gif)
in the interplanetary medium.
This paper uses the formalism of Angle Dependent Partial Frequency
Redistribution which allows a computation of the actual line profile
for a hydrogen velocity distribution taking into account actual local
velocities and temperatures. This work extends the results of
Quémerais & Bertaux (1993) which used the Complete
Frequency Redistribution hypothesis and a constant velocity and
temperature. Our computation also includes a scattering phase function
and a realistic solar line profile. The radiative transfer
computations are compared to the values obtained by various
approximations in both the inner and the outer heliosphere. Correction
tables are derived from these comparisons.
Key words: radiative
transfer 
Sun: UV
radiation
inteplanetary
medium
ultraviolet: solar system
Send offprint requests to: E. Quémerais
© European Southern Observatory (ESO) 2000
Online publication: June 26, 2000
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