文章基本信息

标题：A Fast and Accurate Method of Radiation Hydrodynamics Calculation in Spherical Symmetry
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作者：Torsten Stamer ; Shu-ichiro Inutsuka
期刊名称：The Astronomical journal
印刷版ISSN：0004-6256
电子版ISSN：1538-3881
出版年度：2018
卷号：155
期号：6
页码：1-17
DOI：10.3847/1538-3881/aac023
语种：English
出版社：American Institute of Physics
摘要：We develop a new numerical scheme for solving the radiative transfer equation in a spherically symmetric system. This scheme does not rely on any kind of diffusion approximation, and it is accurate for optically thin, thick, and intermediate systems. In the limit of a homogeneously distributed extinction coefficient, our method is very accurate and exceptionally fast. We combine this fast method with a slower but more generally applicable method to describe realistic problems. We perform various test calculations, including a simplified protostellar collapse simulation. We also discuss possible future improvements.
关键词：methods: numerical;radiative transfer;stars: formation