@article{11c50732506c457ab97ad24bf837df77,
title = "Accurate Short-Characteristics Radiative Transfer in A Numerical Tool for Astrophysical RESearch (ANTARES)",
abstract = "We aim to improve the accuracy of radiative energy transport in three-dimensional radiation hydrodynamical simulations in ANTARES (A Numerical Tool for Astrophysical RESearch). We implement in the ANTARES short-characteristics numerical schemes a modification of the B{\'e}zier interpolant solver. This method yields a smoother surface structure in simulations of solar convection and reduces the artifacts appearing due to the limited number of rays along which the integration is done. Reducing such artifacts leads to increased stability of the code. We show that our new implementation achieves a better agreement of the temperature structure and its gradient with a semi-empirical model derived from observations, as well as of synthetic spectral-line profiles with the observed solar spectrum.",
keywords = "Hydrodynamics, Methods: numerical, Radiative transfer",
author = "Kostogryz, {Nadiia M.} and Friedrich Kupka and Nikolai Piskunov and Damian Fabbian and Daniel Kr{\"u}ger and Laurent Gizon",
note = "Funding Information: We thank our reviewer for detailed and useful suggestions, which have improved our article. We are also thankful to Veronika Witzke for providing us with the MPS-ATLAS code, which is used to calculate opacities in 1D model atmospheres and Ivan Milic and Alexander Shapiro for useful discussions. This work has made use of the VALD database, operated at Uppsala University, the Institute of Astronomy RAS in Moscow, and the University of Vienna. This work was partially supported by the Max Planck Society grant “PLATO Science” and DLR PLATO grants Nr. 50OO1501 and 50OP1902. F. Kupka, D. Fabbian, and D. Kr{\"u}ger gratefully acknowledge partial support by project P29172 of the Austrian Science Fund (FWF). F. Kupka and L. Gizon acknowledge partial support from ERC Synergy grant WHOLE SUN 810218. Publisher Copyright: {\textcopyright} 2021, The Author(s). Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = mar,
doi = "10.1007/s11207-021-01777-6",
language = "English (US)",
volume = "296",
journal = "Solar Physics",
issn = "0038-0938",
publisher = "Springer Netherlands",
number = "3",
}