Astronomers take ‘heartbeat’ of black hole

A black hole gets a large corona before it emits jets. This is revealed, among other things, by the heartbeat 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 on Monday in Nature Astronomy.
Read original article here.