[Credit: NASA, ESO , NAOJ, Giovanni Paglioli; Assembling and processing: R. Colombari and R. Gendler]
YUM!
Awesome!
Eh? I though Seyfert galaxies were where the central core was undergoing a chain reaction of supernovas. The first one slightly warms the surrounding stars, shortening their lives and pushing a few of them over the edge, they in turn warm their neighbors, pushing some into nova, etc.
No need to evoke a black hole as a root cause.