Rapid changes point to origin of ultra-fast black hole 'burp'

Scientists have made the most detailed observation yet of a black hole outflow, from the active galaxy IRAS 13224-3809. The outflow’s temperature changed on time scales of less than an hour — hundreds of times faster than ever seen before. The rapid fluctuations in the outflow’s temperature also indicated that the outflow was responding to X-ray emissions from the accretion disk, a dense zone of gas and other materials that surrounds the black hole.

(via WSJ)

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