The influence of line opacity treatment in STELLA on supernova light curves
| Autor: | P. V. Baklanov, A. P. Mironov, Alexandra Kozyreva, S. I. Blinnikov, Luke J. Shingles |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
High Energy Astrophysical Phenomena (astro-ph.HE)
Physics Opacity 010308 nuclear & particles physics Scattering FOS: Physical sciences Astronomy and Astrophysics Context (language use) Astrophysics Light curve 01 natural sciences Supernova Thermalisation Astrophysics - Solar and Stellar Astrophysics Space and Planetary Science 0103 physical sciences Radiative transfer Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Solar and Stellar Astrophysics (astro-ph.SR) Line (formation) |
| Popis: | We systematically explore the effect of the treatment of line opacity on supernova light curves. We find that it is important to consider line opacity for both scattering and absorption (i.e. thermalisation which mimics the effect of fluorescence.) We explore the impact of degree of thermalisation on three major types of supernovae: Type Ia, Type II-peculiar, and Type II-plateau. For that we use radiative transfer code STELLA and analyse broad-band light curves in the context of simulations done with the spectral synthesis code ARTIS and in the context a few examples of observed supernovae of each type. We found that the plausible range for the ratio between absorption and scattering in the radiation hydrodynamics code STELLA is (0.8-1):(0.2-0), i.e. the recommended thermalisation parameter is 0.9. Accepted for publication in MNRAS |
| Databáze: | OpenAIRE |
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