Blasts of intergalactic radiation hint at elusive mid-sized black hole
Mid-sized black holes are harder to spot than their smaller or supermassive cousins, but powerful bursts of radiation from a faraway galaxy ..
https://www.newscientist.com/article/2272871-blasts-of-intergalactic-radiation-hint-at-elusive-mid-sized-black-hole/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home