Computer Science
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jqsrt..47..433h&link_type=abstract
Journal of Quantitative Spectroscopy & Radiative Transfer (ISSN 0022-4073), vol. 47, no. 6, June 1992, p. 433-453.
Computer Science
88
Iterative Solution, Novae, Perturbation Theory, Radiative Transfer, Relativistic Theory, Run Time (Computers), Convergence, Method Of Characteristics, Radiation Distribution, Supernovae, Wolf-Rayet Stars
Scientific paper
A fast method for the solution of the radiative transfer equation in rapidly moving spherical media, based on an approximate Lambda-operator iteration, is described. The method uses the short characteristic method and a tridiagonal approximate Lambda-operator to achieve fast convergence. The convergence properties and the CPU time requirements of the method are discussed for the test problem of a two-level atom with background continuum absorption and Thomson scattering. Details of the actual implementation for fast vector and parallel computers are given. The method is accurate and fast enough to be incorporated in radiation-hydrodynamic calculations.
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