Towards Precision Astronomy: Exploring Extreme Gravity with Gravitational Waves
by
Open Area (4F-SW)
Tsung-Dao Lee Institute
Host: Dong Lai
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Abstract:
Gravitational-wave astronomy is a young yet rapidly growing field. Generated by violent astrophysical processes such as binary black hole mergers, gravitational waves are ripples in spacetime that carry rich information about the most extreme environments in the Universe. Nowadays, they have become a powerful and complementary way to listen to the cosmos, alongside traditional electromagnetic observations.
In this talk, I will start with the basics of gravitational waves, and then highlight some ongoing efforts to decipher exciting physics from these signals, including signatures of black hole horizons, nonlinear or even turbulent behaviors in General Relativity, etc. I will also introduce a novel numerical framework that currently offers the most accurate approach to solving Einstein’s field equations.
Biography:
Sizheng Ma received his Ph.D. in Physics from Caltech in 2023, under the supervision of Profs. Yanbei Chen, Mark Scheel, and Saul Teukolsky. He is currently a postdoctoral researcher at the Perimeter Institute. His research focuses on General Relativity and gravitational waves, combining black hole perturbation theory, numerical relativity, and data analysis to explore the nature of strong gravity in the universe. 
