奇异夸克相变对Ⅱ型超新星激波能量的影响

The Effect of Strange Quark Phase Transition on the Shock Energy of Type Ⅱ Supernovae

在模拟超新星演化时，考虑非奇异一奇异夸克相变因素，与没有考虑奇异相变的情况相比，得到了更强的激波．这可能是奇异相变增加了星核区对流不稳定性所致在本文的计算环境里，一阶奇异夸克相变的结果使具有128MO铁星核的WW（88）模型爆发，打破了瞬发机制只能使约1．1MO铁星核模型爆发的上限，并支持了戴子高等人所作出的奇异夸克相变能提高超新星爆发机会的论断．

We have found that the introduction of strange quark phaJse transition in the simulation of the evolution of supernovae results in a stronger shock wave. This is probably due to an increased convective instability in the core. For our range of calculation we found that a first-order strange phase transition can induce explosion in a WW(88) model with a 1.28 M0iron core (the upper bound for prompt explosion was about 1.1 M0). Our result supports DAI Zi-gao et al's thesis that strange quark phase transition can raise the probability ofsupernova explosion.