Quasar tattoo

The rotational rate of one of the most massive black holes in the universe has been measured The rotational rate of this massive black hole is one third of the maximum spin rate allowed in General Relativity. This 18 billion solar mass black hole powers a quasar called OJ287, which lies about 3.5 billion light years away from Earth. Quasi-stellar radio sources or ‘quasars’ for short, are the very bright centres of distant galaxies which emit huge amounts of electro-magnetic radiation due