Animation of two phases of a black hole - Mndez et al. in Nature Astronomy, 2022

Astronomers take heartbeat of black hole A black hole gets a large corona first, and only after that it emits jets. This is revealed, among other things, by the heart beat graph that an international team of astronomers has made of a black hole and a star orbiting around each other. The team, led by Mariano Méndez from the University of Groningen (the Netherlands), will publish their results in Nature Astronomy. More information and links to the scientific paper: (c) Méndez et al.