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

We have developed a public code, O PTAB , 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 Int...

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Bibliographic Details
Published in:Astronomy and astrophysics (Berlin) 2022-03, Vol.659, p.A87
Main Authors: Hirose, Shigenobu, Hauschildt, Peter, Minoshima, Takashi, Tomida, Kengo, Sano, Takayoshi
Format: Article
Language:English
Subjects:
Absorption
Astrophysics
Bremsstrahlung
Fluid mechanics
Hydrodynamics
Message passing
Opacity
Performance evaluation
Photoionization
Radiation
Rayleigh scattering
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Summary:We have developed a public code, O PTAB , 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.
ISSN:0004-6361
1432-0746
DOI:10.1051/0004-6361/202141076