报告人：杨桓 副教授（清华大学）

题 目：Ringing Black Holes 黑洞的振动

时 间：2025年5月7日（周三）上午11:00

地 点：理工楼1226

邀请人：张玉鹏、刘玉孝

报告摘要：

In this talk I will discuss one of the frontiers of both theory and data analysis in gravitational wave astronomy - understanding the ringing of black holes and probing them from real data. I will review past efforts started from Chandrasekhar, Detweiler, et al in analyzing modes of black holes and explain what we currently understand in both linear and nonlinear wave properties, as well as the corresponding detection aspect. At last I will show a few pressing problems and where we will be heading (from my point of view).

本次报告将探讨引力波天文学中理论与数据分析的前沿领域之一：理解黑洞的振动现象并基于真实数据对其进行探测。我将回顾从钱德拉塞卡（Chandrasekhar）、德特韦勒（Detweiler）等人开启的黑洞振动模式研究的早期工作，阐释当前对黑洞线性与非线性波动特性的理论认知及其对应的探测方法。最后，我将展示该领域亟待解决的若干紧迫问题，并基于个人视角展望未来研究方向。

报告人简介：

Yang Huan received his PhD from Caltech in 2013. After that he became a postdoc fellow in Perimeter Institute and later in Princeton University. In 2017 he joined the faculty of Perimeter Institute and Guelph University. Starting in April 2024, he joined the Astronomy Department of Tsinghua University as a (tenured) associate Professor. Yang Huan works on various topics in general relativity, relativistic astrophysics and gravitational wave astronomy. He is a member of the LIGO Scientific Collaboration and the LISA Consortium.

杨桓于2013年在加州理工学院获得博士学位。毕业后先后于圆周研究所和普林斯顿大学从事博士后研究。2017年起担任圆周研究所和圭尔夫大学的教职。2024年4月起加入清华大学天文学系，担任（长聘）副教授。研究领域涵盖广义相对论、相对论天体物理学和引力波天文学等多个方向。目前是LIGO科学合作组和LISA联盟的成员。