CAJ | 학술논문

【目的】物态方程对铁核塌缩型超新星爆发过程中铁核塌缩、激波产生及其传播等都将产生影响。为了探索对超新星爆发机制解释更合理的物态方程，对比分析2种物态方程对铁核塌缩型超新星爆发的影响。【方法】以新前身星模型数据作为输入参量，分别采用 Lattimer 等(LS 物态方程)和王贻仁等(W 物态方程)提出的物态方程，对不同初始质量的铁核塌缩型超新星的爆发过程进行数值模拟，并对比分析模拟结果。【结果】在 LS 物态方程下，铁核塌缩结束时恒星的中心密度最高只达到核密度的1.5倍，且得到的同模区偏小，中微子的能量损失较大，这使激波在向外传播过程中损失了较多能量，不利于解释超新星的成功爆发。【结论】W 物态方程更能合理解释超新星的成功爆发。
【목적】물태방정대철핵탑축형초신성폭발과정중철핵탑축、격파산생급기전파등도장산생영향。위료탐색대초신성폭발궤제해석경합리적물태방정，대비분석2충물태방정대철핵탑축형초신성폭발적영향。【방법】이신전신성모형수거작위수입삼량，분별채용 Lattimer 등(LS 물태방정)화왕이인등(W 물태방정)제출적물태방정，대불동초시질량적철핵탑축형초신성적폭발과정진행수치모의，병대비분석모의결과。【결과】재 LS 물태방정하，철핵탑축결속시항성적중심밀도최고지체도핵밀도적1.5배，차득도적동모구편소，중미자적능량손실교대，저사격파재향외전파과정중손실료교다능량，불리우해석초신성적성공폭발。【결론】W 물태방정경능합리해석초신성적성공폭발。
Objective]The equation of state (EOS)obviously causes influence on the iron-core collapse,the generation and propagation of shock waves in iron core supernova explosion.To seek reasonable EOS for understanding the mechanism about supernova explosion,the effects of two kinds of EOS on iron core supernova explosions are analyzed.[Methods]With the input data of progenitor stars,the iron core supernova explosions of different mass are numerical sim-ulated by the EOS from Lattimer and Swesty group (LS EOS)or from Wang Yi-ren group (W EOS).And the results are discussed by comparison.[Results]The density of stellar center only reaches to 1.5 times than nuclear density at the end of iron core collapse with the LS EOS.The inner core is smaller and the energy loss of neutrino is larger than that with the W EOS,indica-ting that there is more energy loss in outward propagation of shock wave with the LS EOS, which is not good for a successful supernova explosion.[Conclusion]The W EOS is better to explain a supernova explosion reasonably.