Fast approximations for the R(II-A) redistribution function
Abstract
Approximations are proposed for the computation of the RII-A redistribution function (which describes the redistribution of frequencies for photons scattered coherently in the atom's frame). These approximations are particularly efficient on vector computers. Precision and timing properties of the method are examined for a typical line formation problem (Lyα in the solar atmosphere).
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- May 1986
- Bibcode:
- 1986A&A...160..195G
- Keywords:
-
- Approximation;
- Coherent Scattering;
- Computational Astrophysics;
- Distribution Functions;
- Line Spectra;
- Radiative Transfer;
- Stellar Spectra;
- Lyman Alpha Radiation;
- Solar Spectra;
- Astrophysics