Universe may be full of monster black holes
Universe may be full of monster black holes: Black holes are referred to as “supermassive” if they have masses of millions or billions of times more than the sun. Supermassive black holes with masses of more than 10bn suns have previously been found at the heart of large galaxies located in dense clusters in the universe...
"“Each time they eject a star [the monster black holes] lose a bit of energy and the binary becomes smaller,” said Dr Jens Thomas, an author of the paper from the Max Planck Institute for Extraterrestrial Physics.
“At some point the two black holes are so close to each other that they merge.”"
M G Warrier