OPTAB: Public code for generating gas opacity tables for radiation hydrodynamics simulations
Dec 10, 202114 pages
Published in:
- Astron.Astrophys. 659 (2022) A87,
- Astron.Astrophys. 659 (2022) A87
- Published: Mar 1, 2022
e-Print:
- 2112.05689 [astro-ph.IM]
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Abstract: (EDP Sciences)
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.Key words: opacity / radiative transfer / methods: numericalNote:
- Astronomy and Astrophysics, in press
- opacity
- radiative transfer
- methods: numerical
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