At http://phys.org/print397922025.html … mainstream is trying to make sense of volatile behaviour around what they are convinced is a black hole at the centre of a nearby galaxy. Many such galaxies have an extremely bright core, or nucleus, presumed to be fed by material falling into a supermassive black hole. They are some of the brightest objects in the universe – but the light is inclined to dim, it is being suggested, when the black hole has no dinner. In effect, starving the black hole is thought to cause the light to lose its brightness, and lack of a dinner is code for lack of nearby material coming close to the gaping jaws. No lunch (dust and debris and nearby space objects) = no activity (bright light).
The same story is at www.dailygalaxy.com/my_weblog/2016/11/the-opaque-galaxy-starving-black-h… … but see the September 2016 issue of 'Astronomy and Physics' journal.