Every large galaxy in the observable universe is thought to host a supermassive black hole at its centre. Most of the time, on the available observational evidence, these black holes are dormant. They accrete only tiny amounts of matter from their immediate s…
Every large galaxy in the observable universe is thought to host a supermassive black hole at its centre. Most of the time, on the available observational evidence, these black holes are dormant. The… [+8140 chars]