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KIAM Preprint  82, Moscow, 2022
Authors: Potashov M.S., Yudin A.V.
Transformation of the transport equation to a form convenient for calculation in an expanding medium
Abstract:
The work analytically studies the effect of expansion opacity in the envelope of supernovae. Between separate lines of different frequencies, shifted due to the Doppler effect, nonlocal radiative interaction occurs. In the case of a large number of bound-bound transitions, opacity is increased when the plasma expands with a non-uniform velocity field. A method is proposed for transforming the transport equation, allowing correctly calculate the average values characterizing the radiation field, as well as the averaged opacity in such media.
Keywords:
supernovae, opacity, radiation transfer
Publication language: russian,  pages: 11
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text:
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About authors:
  • Potashov Marat Shamilevich,  orcid.org/0000-0002-0564-1101KIAM RAS
  • Yudin Andrey Viktorovich,  orcid.org/0000-0002-0986-4257Kurchatov Institute