Black hole surprises with “hiccups” – “We thought we knew a lot”. Black hole makes its host galaxy become significantly brighter.
It is orbited by a smaller black hole that fights its way through the accretion disk and releases gas clouds in the process. The black hole devoured the remnants of a star for four months, while the second black hole moved through the disk, ensuring the black hole's gravity tore the star apart. The material from the torn star ended up in the accrete disk, causing it to shine brighter.