We know that the light emitted as matter falls and disappears into a supermassive black hole is highly variable with time. Is this twinkling a random process or does it contain information on the physical properties of the system, such as the mass of the black hole or the rate at which matter falls onto it? An international team of astronomers from Greece, Germany and Italy addresses this question in a new study recently released to the scientific community. 

Find out more at https://xraygroup.astro.noa.gr/twinkletwinklebigblackhole/