Interesting tangent: when there's a binary star system that gets very close to this black hole, the three can interact in a way that one of the two stars falls in, while the other steals its gravitational potential and is ejected at extreme speed. There's a few "hypervelocity" rogue stars in the Milky Way, which were probably accelerated by the black hole. They're on escape trajectories leaving the galaxy.

https://en.wikipedia.org/wiki/Stellar_kinematics#Hyperveloci...

https://en.wikipedia.org/wiki/HE_0437-5439