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学术报告(20171226)Supernova progenitors probed by gamma rays
发布时间:2017-12-26

报告题目: Supernova progenitors probed by gamma rays
报告人: 王伟 教授
报告人单位: 武汉大学
报告时间: 2017年12月26日(周二上午)10:00
报告地点: 东七楼 427室
报告摘要:

Supernovae have the subclasses of core-collapse supernovae (Type II, Type Ib/Ic) and thermonuclear explosions (Type Ia). However, the central explosion mechanisms for the different types of supernovae are not well understood. The radioactivity isotopes, i.e., 44Ti and 56Ni, are produced in the central explosion region of supernovae. Detection of the gamma-rays emitted by these isotopes can constrain the mechanism of supernova explosions and the supernova progenitors. I will introduce the recent results of gamma-ray observations: constraining explosion mechanism of core-collapse supernovae by detecting 44Ti in CAS A and SN 1987A; progenitors of Type Ia supernovae probed by 44Ti in Tycho and 56Ni in SN 2014J. Future possible development of gamma-ray detectors is also discussed.


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