Black holes are considered strong enough to pull light itself in. It should stand to reason light would build up in orbit around black holes before the event horizon. If this is true the accumulation of energy would form a ring or accretion disk which would eventually coalesce into a star. I have based this idea off observed stars orbiting and identifying black holes. Also quasars which represent massive amounts of energy circling black holes. The giant gas cloud currently heading toward our galactic center could reveal this potential.