KIAM Main page Web Library  •  Publication Searh  Русский 
Publication

KIAM Preprint № 87, Moscow, 2021
Authors: Potashov M.S., Baklanov P.V., Blinnikov S.I.
Modification of the radiation transfer equations to take into account NLTE effects in the simulations of supernova light curves by the radiation hydrodynamic code STELLA
Abstract:
The observed supernova broadband light curves serve as an extensive source of information about the physics of presupernovae and about the processes taking place during supernova outbursts. Their modeling requires complex calculations using radiation-hydrodynamic codes. The paper proposes to modify the STELLA radiation-hydrodynamic code to take into account NLTE (local thermodynamic equilibrium) effects in the calculation of supernova light curves. The paper provides a theoretical justification for the need to take into account the effects of NLTE when calculating the level number densities of multicharged plasma in a supernova envelope. A modification of equations of time-dependent radiation transfer and the equation of gas energy to take into account the NLTE effects is described. Various methods of mean opacity coefficients in the expanding envelope of supernovae are analyzed.
Keywords:
supernovae, radiation transfer, opacity, nlte
Publication language: russian,  pages: 26
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text:
Export link to publication in format:   RIS    BibTeX
View statistics (updated once a day)
over the last 30 days — 9 (+6), total hit from 16.12.2021 — 100
About authors:
  • Potashov Marat Shamilevich,  orcid.org/0000-0002-0564-1101KIAM RAS
  • Baklanov Petr Valerievich,  orcid.org/0000-0002-5920-1478KIAM RAS
  • Blinnikov Sergei Ivanovich,  orcid.org/0000-0002-5726-538XKIAM RAS