Radiative transfer in spherical geometry
Abstract
The Eddington approximation generalized for spherical geometry is reinvestigated. A singularity leading possibly to numerical instability in one of the key equations in the previous theory (Unno and Kondo 1976; AAA 17.063.043) is removed for purposes of a better presentation and easier application of the theory. For illustration, calculations are performed for the grey Kosirev envelope.
 Publication:

Publications of the Astronomical Society of Japan
 Pub Date:
 1989
 Bibcode:
 1989PASJ...41..211U
 Keywords:

 Eddington Approximation;
 Optical Thickness;
 Radiative Transfer;
 Stellar Envelopes;
 Radiation Distribution;
 Singularity (Mathematics);
 Spherical Shells;
 Astrophysics