The influence of line opacity treatment in STELLA on supernova light curves

Alexandra Kozyreva; Luke Shingles; Alexey Mironov; Petr Baklanov; Sergey Blinnikov

doi:10.1093/mnras/staa2704

The influence of line opacity treatment in STELLA on supernova light curves

Alexandra Kozyreva^*, Luke Shingles, Alexey Mironov, Petr Baklanov, Sergey Blinnikov

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

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. thermalization, which mimics the effect of fluorescence). We explore the impact of the degree of thermalization on three major types of supernovae: Type Ia, Type II-peculiar, and Type II-plateau. For this we use the 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 of 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 thermalization parameter is 0.9.

Original language	English
Pages (from-to)	4312-4324
Number of pages	13
Journal	Monthly Notices of the Royal Astronomical Society
Volume	499
Issue number	3
DOIs	https://doi.org/10.1093/mnras/staa2704
State	Published - 1 Dec 2020
Externally published	Yes

Keywords

Radiative transfer
Stars: massive
Supernovae
Supernovae: general

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10.1093/mnras/staa2704

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title = "The influence of line opacity treatment in STELLA on supernova light curves",

abstract = "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. thermalization, which mimics the effect of fluorescence). We explore the impact of the degree of thermalization on three major types of supernovae: Type Ia, Type II-peculiar, and Type II-plateau. For this we use the 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 of 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 thermalization parameter is 0.9.",

keywords = "Radiative transfer, Stars: massive, Supernovae, Supernovae: general",

author = "Alexandra Kozyreva and Luke Shingles and Alexey Mironov and Petr Baklanov and Sergey Blinnikov",

note = "Publisher Copyright: {\textcopyright} 2020 The Author(s)",

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doi = "10.1093/mnras/staa2704",

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T1 - The influence of line opacity treatment in STELLA on supernova light curves

AU - Kozyreva, Alexandra

AU - Shingles, Luke

AU - Mironov, Alexey

AU - Baklanov, Petr

AU - Blinnikov, Sergey

PY - 2020/12/1

Y1 - 2020/12/1

N2 - 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. thermalization, which mimics the effect of fluorescence). We explore the impact of the degree of thermalization on three major types of supernovae: Type Ia, Type II-peculiar, and Type II-plateau. For this we use the 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 of 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 thermalization parameter is 0.9.

AB - 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. thermalization, which mimics the effect of fluorescence). We explore the impact of the degree of thermalization on three major types of supernovae: Type Ia, Type II-peculiar, and Type II-plateau. For this we use the 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 of 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 thermalization parameter is 0.9.

KW - Radiative transfer

KW - Stars: massive

KW - Supernovae

KW - Supernovae: general

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JO - Monthly Notices of the Royal Astronomical Society

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The influence of line opacity treatment in STELLA on supernova light curves

Abstract

Keywords

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