That is ,a quark star is a black hole,while the black hole formation has not collapsed to one point yet.

结果表明夸克星的质量分布在事件视界以内,即夸克星是黑洞,但构成这种黑洞的物质并没有坍缩到大小为零的一点。

Through almost 30 years observation and study, astronomers come to a relatively clear agreement that low mass stars form by collapse, accretion and outflow.

近30多年的观测研究使得天文学家对小质量恒星的形成有了相对明确的认识:小质量恒星通过坍缩、吸积和外向流的路标而形成。

In this paper, we study the effects ofκ0in the equation of state on the core collapse,shock propagation ,explosion energy and temperature of iron core at t 4, using the data of presupernova given by Woosley in 2002.

包括大质量恒星的演化、超新星的分类、超新星的爆发机制、引起恒星不稳定坍缩的物理因素等;同时论述了Ⅱ型超新星爆发所应用的数值模拟相关物理因素和数值处理方法,包括电子俘获的一般分析方法、“四粒子”模型的物态方程、广义相对论流体动力学方法和数值模拟差分方法。