“Rapidly Blinking” –Dead White Dwarfs Rare Source of Gravitational Waves

Binary White Dwarfs


“We’ve seen many examples of a type of system where one white dwarf has been mostly cannibalized by its companion, but we rarely catch these systems as they are still merging like this one,” says Kevin Burdge at Caltech about two dead stars that have been spotted whipping around each other every seven minutes, and one of a few known sources of gravitational waves—ripples in space and time–that should keep blinking in the night sky for a hundred thousand years.