"Black Hole Twins: Powering the Brightest Galaxies in Space"

Astronomers studying blazar galaxies, a type of quasar, have found evidence suggesting that fluctuations in their brightness may be caused by pairs of supermassive black holes in decaying orbits. This discovery could provide insights into how supermassive black holes grow to such enormous sizes. The researchers propose that the precession of the jet source, caused by a binary black hole or a warped accretion disk, is responsible for the observed variability. While the presence of binary black holes cannot be directly observed yet, continued monitoring of precession and long-term observation of other blazars could provide further evidence for their existence.