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Fast radio burst “afterglow” was actually a flickering black hole

5 April 2016 Astronomy Now

Fast radio bursts (or FRBs) are brief yet powerful spurts of radio energy lasting only a few milliseconds. They were first identified in 2007 and their source has remained a mystery. New research shows that the radio emission believed to be an afterglow from FRB 150418 actually originated from a distant galaxy’s core and was unassociated with the FRB.