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Watch a 57-minute Harvard CMSA General Relativity seminar where Professor Vitor Cardoso from IST Lisbon and The Niels Bohr Institute explores the testing of General Relativity through gravitational waves. Delve into the fascinating world of gravitational collapse and black holes, examining their unique properties including light rings, ergoregions, and horizons. Learn how these celestial phenomena serve as perfect laboratories for studying strong gravity, particle physics, and potential quantum-gravity effects. Follow along as the lecture progresses through key topics including the Kerr solution, singularities and censorship, energy extraction mechanisms, and the analysis of inspiralling compact objects. Explore advanced concepts such as parametrized tests, spectroscopy of black holes, ringdown descriptions, and environmental effects. Discover how black holes can function as particle detectors, particularly in the context of dark matter and fundamental fields, while examining their coupling to the Standard Model and the constraints on fundamental fields via superradiance.
