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

申荣峰，中山大学

报告人介绍

中山大学珠海分校物理与天文学院教授

地点

物理学院新楼5楼多功能厅

时间

2021年6月29日下午2点

邀请人