1996/05/22 by J. Gómez-Gomar, J. Gomez-Gomar, J. Isern · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Gamma-ray bursts and supernovae #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/177927
18 pages (LaTeX, prepared with AAS macros) + 6 figures in PostScript, Accepted by the Astrophysical Journal
arxiv created 1996/05/22 · openalex publication_date 1996/10/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the application of a simplified method to solve the dynamic radiative transfer problem in expanding envelopes. The method, which requires a computational effort similar to that of the diffusion approximation, is based on the use of a generalization of the Eddington closure relationship that allows the inclusion of scattering and relativistic corrections up to O(v/c). We apply this method to the calculation of light curves of Type Ia supernovae, showing that it yields much more accurate results than the diffusion approximation and that the latter is seriously in error when applied to determine emergent flux and its spectral distribution.