The LIGO and Virgo observatories have now observed gravitational wave signals from close to 100 binary black hole merger events. These observations potentially enable us now to confront theoretical predictions of general relativity with observational data. Some of the most remarkable predictions of general relativity are concerned with black holes. These include: the black hole area increase law, properties of black hole horizons, uniqueness theorem and black hole quasi-normal modes. In this talk, I will review recent results in this direction, and the prospects with future, more sensitive detectors.
[Within the National Seminar Theoretical High Energy Physics: https://www.drstp.nl/events/national-seminar-theoretical-high-energy-physics-march-17th-2023/]