


Black holes follow the no-hair theorem
Bransgrove A., et al./American Physical Society
Black holes with “hair” will quickly go bald. A key theoretical prediction about black holes called the no-hair theorem states that an isolated black hole can be described by just three numbers – its mass, spin and charge – and any other properties, or “hair”, are irrelevant. Now, a set of detailed simulations has shown how black holes can shed a magnetic field to comply with the no-hair theorem.
When a black hole forms from a magnetised star, it is born with a magnetic field. How …
More Stories
Proposals but no consensus on curbing water shortages in Colorado River basin
US military shoots down Chinese balloon over coastal waters
The physics of James Joyce’s Ulysses