核心坍缩型超新星致引力波暴

Gravitational Wave Bursts from Core-Collapse Supernovae

自开始探测引力波以来,核心坍缩型超新星就被认为是一类重要的引力波天体物理源。回顾了广义相对论中引力波的相关知识,介绍了核心坍缩型超新星在Fe核心坍缩阶段和反弹阶段,其Fe核旋转的角速度和对流不稳定性对引力波暴的影响,并且讨论了核心坍缩型超新星爆发的最终产物——原中子星的振荡理论以及其产生的引力波暴。最后,展望通过电磁波和引力波的协同观测,将来能够更好地理解核心坍缩型超新星爆发的全过程,并进而探知中子星的内部结构。

Ever since the very first experimental effort to detect gravitational waves,corecollapse supernovae have been considered as important gravitational wave sources.In this paper,we review the relevant knowledge of gravitational wave in general relativity.We introduce the influence of the angular velocity of the iron core and the convection instability on gravitational wave bursts in stellar core collapse and its post-bounce phase.We overview the oscillation theory of proto-neutron stars,the final product of core-collapse supernova explosion,and the resulting gravitational wave bursts.Finally,we expect that the coincident observation of gravitational waves and electromagnetic waves by the international network of observatories,can help us understand the core-collapse supernova evolution and internal structure of neutron stars in the near future.