“An unusual central glow makes M106 one of the closest examples of the Seyfert class of galaxies, where vast amounts of glowing gas are thought to be falling into a central massive black hole.”
Eh?
Isn’t a Seyfert galaxy one where the stars are close enough that the additional heat from a nova slightly warms up nearby stars accelerating their fusion, shortening their lives and starts a star novae chain reaction?
No black hole needed.