Abstract
In this talk, the speaker 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. He will review past efforts starting 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, he will show a few pressing problems and where we will be heading.
Prof. Huan Yang is an Associate Professor in Astronomy in Tsinghua University. He obtained his PhD in Physics in 2013 at Caltech. After that, he held postdoc positions in Perimeter Institute and Princeton University. He joined the faculty of Perimeter Institute and Guelph University in 2017 and joined Tsinghua in 2024. His current research interests include strong-field gravitational phenomena, high-energy astrophysical transients, dynamics and multi-messenger (gravitational waves, electromagnetic waves, neutrinos) signatures of compact objects, and the development of next-generation gravitational wave detectors.