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名稱Title
2021天文年會
國立嘉義大學蘭潭校區
5月21日至23日

論文摘要

A High-Performance Tabulated Nuclear Equation of State for Core-Collapse Supernova Simulations

[ Poster ]

Inhyeok Song (National Tsing Hua University); Hsi-Yu Schive (National Taiwan University); He-Feng Hsieh (National Tsing Hua University); Kuo-Chuan Pan (National Tsing Hua University);

Core-collapse supernova explosions are among the most fascinating events in the universe, but the detailed explosion engines, nuclear equation of state, and multimessenger signals remain elusive. In this project, we modify and improve the tabulated nuclear equation of state from http://stellarcollapse.org. In a typical tabulated nuclear equation of state, the table is constructed based on three major thermodynamics quantities, i.e., density, temperature, and electron fraction. Therefore, an expensive root finding solver through a Newton-Raphson search or bisection is necessary when either temperature or electron fraction is unknown. We avoid this issue by constructing a new energy based table, which is the most frequently used mode in hydrodynamics simulations, together with sub tables that are pre-calculated for temperature, pressure, and entropy modes. Accurate and efficient results have been achieved, and the solver is accelerated with GPU acceleration with Cuda.