Comparing Moment-Based and Monte Carlo Methods of Radiation Transport Modeling for Type II-Plateau Supernova Light Curves. (arXiv:2006.01832v1 [astro-ph.HE])

<a href="http://arxiv.org/find/astro-ph/1/au:+Tsang_B/0/1/0/all/0/1">Benny T.-H. Tsang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Goldberg_J/0/1/0/all/0/1">Jared A. Goldberg</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bildsten_L/0/1/0/all/0/1">Lars Bildsten</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kasen_D/0/1/0/all/0/1">Daniel Kasen</a>

Time-dependent electromagnetic signatures from core-collapse supernovae are

the result of detailed transport of the shock-deposited and

radioactively-powered radiation through the stellar ejecta. Due to the

complexity of the underlying radiative processes, considerable approximations

are made to simplify key aspects of the radiation transport problem. We present

a systematic comparison of the moment-based radiation hydrodynamical code

STELLA and the Monte Carlo radiation transport code Sedona in the 1D modeling

of Type II-Plateau supernovae. Based on explosion models generated from the

Modules for Experiments in Stellar Astrophysics (MESA) instrument, we find

remarkable agreements in the modeled light curves and the ejecta structure

thermal evolution, affirming the fidelity of both radiation transport modeling

approaches. The radiative moments computed directly by the Monte Carlo scheme

in Sedona also verify the accuracy of the moment-based scheme. We find that the

coarse resolutions of the opacity tables and the numerical approximations in

STELLA have insignificant impact on the resulting bolometric light curves,

making it an efficient tool for the specific task of optical light curve

modeling.

Time-dependent electromagnetic signatures from core-collapse supernovae are

the result of detailed transport of the shock-deposited and

radioactively-powered radiation through the stellar ejecta. Due to the

complexity of the underlying radiative processes, considerable approximations

are made to simplify key aspects of the radiation transport problem. We present

a systematic comparison of the moment-based radiation hydrodynamical code

STELLA and the Monte Carlo radiation transport code Sedona in the 1D modeling

of Type II-Plateau supernovae. Based on explosion models generated from the

Modules for Experiments in Stellar Astrophysics (MESA) instrument, we find

remarkable agreements in the modeled light curves and the ejecta structure

thermal evolution, affirming the fidelity of both radiation transport modeling

approaches. The radiative moments computed directly by the Monte Carlo scheme

in Sedona also verify the accuracy of the moment-based scheme. We find that the

coarse resolutions of the opacity tables and the numerical approximations in

STELLA have insignificant impact on the resulting bolometric light curves,

making it an efficient tool for the specific task of optical light curve

modeling.

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