采用2002年Woosley给出的前身星模型,使用“WZYW89”程序数值模拟了质量为11—40M的Ⅱ型超新星的爆发过程.计算结果显示新模型对Ⅱ型超新星塌缩、激波传播及爆发都有不同程度的影响.此外,还讨论了激波初始能量的定义.
The presupernova star is one of the most important factors to the evolution of massive stars, especially to the core collapse and shock propagation. Woosley et al. improved their presupernova model base on new rates for beta decay, electron capture and mass loss. Utilizing these new presupernova models, type II supernova explosions are simulated with the code of "WZYW89" in case of stars with masses of 11 - 40M. Properties of the models, such as temperature, density, velocity of the shock, neutrino and electron to baryon ratio are discussed. The results show that there are different effect on the stellar core-collapse, shock propagation and explosion energy. For the explosive energy, the new presupernova models are favor of stronger explosion than before. Besides, a discussion about five definition of initial shock energy also is given, but a definition fit for all models with different mass is not obtained.