Gravitational Wave Observations Confirm No-Hair Theorem in Black Hole Merger

Researchers have used gravitational wave observations to verify the no-hair theorem, which states that black holes can be described by just their mass and angular momentum. By analyzing data from the GW190521 binary black hole merger event, the team discovered a second, weaker quasi-normal mode that had been missed in earlier analyses. The findings are consistent with the predictions of general relativity, confirming that black holes adhere to the no-hair theorem.