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arXiv · 2112.05689

Optab: Public code for generating gas opacity tables for radiation hydrodynamics simulations

Shigenobu Hirose·Peter Hauschildt·Takashi Minoshima·Kengo Tomida·Takayoshi Sano
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Abstract

We have developed a public code, Optab, that outputs Rosseland, Planck, and two-temperature Planck mean gas opacity tables for radiation hydrodynamics simulations in astrophysics. The code is developed for modern high-performance computing, being written in Fortran 90 and using Message Passing Interface and Hierarchical Data Format, Version 5. The purpose of this work is to provide a platform on which users can generate opacity tables for their own research purposes. Therefore, the code has been designed so that a user can easily modify, change, or add opacity sources in addition to those already implemented, which include bremsstrahlung, photoionization, Rayleigh scattering, line absorption, and collision-induced absorption. In this paper, we provide details of the opacity calculations in our code and present validation tests to evaluate the performance of our code.

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Shigenobu Hirose, Peter Hauschildt, Takashi Minoshima, Kengo Tomida, Takayoshi Sano. 2021-12-10. Optab: Public code for generating gas opacity tables for radiation hydrodynamics simulations. https://doi.org/10.1051/0004-6361%2F202141076

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