First black hole ever detected is more massive than we thought
3 institutional releases
Published in Science · View the paper (DOI)
The stellar-mass black hole in the Cygnus X-1 binary system was found to have a mass 21 times that of the Sun and is rotating at a speed close to the speed of light. This discovery challenges astronomers' thoughts on how black holes formed.
Coverage from 3 institutions
- First black hole ever detected is more massive than we thought
- The mass of Cygnus X-1's black hole challenges stellar evolution models American Association for the Advancement of Science (AAAS) · Feb 18, 2021