前身星与Ⅱ型超新星爆发的数值模拟  

Presupernova and Numerical Simulation of Type Ⅱ Supernova Explosion

作　　者：张妙静[1] 杨建辉[1] 潘江洪[1] 

机构地区：[1]广西师范大学物理科学与技术学院,广西桂林541004

出　　处：《广西师范大学学报（自然科学版）》2012年第3期71-76,共6页Journal of Guangxi Normal University:Natural Science Edition

基　　金：国家自然科学基金资助项目(11065004)

摘　　要：利用考虑物质回落与混合效应的前身星输入数据,在一维球对称瞬时爆发模型下数值模拟了质量为12～15M⊙Ⅱ型超新星的星核坍缩、激波传播、爆发能量等过程。计算结果表明:前身星的星核质量、密度、温度、物质构成等对II型超新星爆发有重要影响,不过,数值模拟仍不能实现超新星的瞬时爆发。Based on the input data of presupernova with fallback and mixing of matter,a simulation of type Ⅱ supernova explosion process is made,which includes core collapse,shock propagation and explosion energy.The explosion is simulated in prompt mechanism by one dimension spheral symmetry model with presupernovae mass of 12 M⊙ to 15 M⊙.The results show that the core mass,density,temperature and composition affect the type Ⅱ supernova explosion significantly,but the prompt mechanism cannot get the expecting explosion.

关 键 词：超新星 物质回落 前身星 坍缩 爆发 

分 类 号：P145.3[天文地球—天体物理]