A 3D radiative transfer framework: I. non-local operator splitting and continuum scattering problems

Details A 3D radiative transfer framework: I. non-local operator splitting and continuum scattering problems A 3D radiative transfer framework: I. non-local operator splitting and continuum scattering problems

2006-01-09

arxiv.org/abs/astro-ph/0601183v1

Astronomy and Astrophysics

Astrophysics

A&A, in press. 14 pages, 19 figures. Full resolution figures available at ftp://phoenix.hs.uni-hamburg.de/preprints/3DRT_paper

Scientific paper

10.1051/0004-6361:20053846

We describe a highly flexible framework to solve 3D radiation transfer problems in scattering dominated environments based on a long characteristics piece-wise parabolic formal solution and an operator splitting method. We find that the linear systems are efficiently solved with iterative solvers such as Gauss-Seidel and Jordan techniques. We use a sphere-in-a-box test model to compare the 3D results to 1D solutions in order to assess the accuracy of the method. We have implemented the method for static media, however, it can be used to solve problems in the Eulerian-frame for media with low velocity fields.

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