学术报告(20210702)Tidal disruption events (TDEs): an enigma, a laboratory, and a signpost

作者: 时间:2021-06-25 点击数:

报告题目: Tidal disruption events (TDEs): an enigma, a laboratory, and a signpost
报告人: 申荣锋 副教授
报告人单位: 中山大学
报告时间: 2021年7月2日周五晚上19:00-21:00
报告地点: 东七楼427会议室
报告摘要: In a tidal disruption event (TDE), the star was torn apart by the tidal force of a massive black hole (BH). The fallback and accretion of the stellar debris toward the BH produce a bright flare. Most of TDEs are detected in the optical/UV band, but a handful events are also detected in X-rays. For the latter sample, the X-rays typically shows up later. I will describe our current understanding of this puzzling feature. Each TDE leads to a formation of a nascent disk. Therefore, it provides a laboratory for testing some physics of accretion disk (e.g., the radiation-pressure instability), and the General Relativity (e.g., the Lense-Thirring effect). Lastly, the disruption of a white dwarf (WD) by an intermediate-mass BH (IMBH) would be a dual-messenger (gravitational and electromagnetic waves) event, and could be a potential tool in hunting for the elusive class of IMBHs.
报告人简介: 研究领域:
爆发性的天文暂现源 -- 伽马射线暴,大质量黑洞潮汐瓦解恒星事件,超高光度X射线源,超新星;黑洞吸积盘;致密星
教育背景:
学士-武汉交通科技大学(现武汉理工大学) 1995-1999
硕士-中国科学院高能物理研究所 1999-2003
博士-美国得克萨斯大学奥斯汀分校天文系 2004-2010
职业经历:
客座研究人员-中科院高能物理所粒子天体物理实验室 2003-2004
博士后-加拿大多伦多大学天文与天体物理系 2010-2013
博士后-以色列耶路撒冷希伯来大学 2013-2015
副教授-中山大学物理与天文学院 2015-至今


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