Astronomers don't have an explanation for this, but they suspect it could be more common than once thought
Astronomers have spotted a black hole mysteriously spewing up chunks of a devoured star several years after consuming it.
Black holes have previously been spotted gobbling down stars before vomiting them out, but until now, the ejection has only ever taken place at the same time as the meal. The researchers used four Earth-based observatories located around the globe and two observatories in space to spot the event; they published their findings Oct. 11 in The Astrophysical Journal .
But AT2018hyz is unusual: Not only did it wait for three years after snacking on the star to emit a flash, but the speed of the material sent flying from its mouth is staggering. Most TDE outflows travel at 10% the speed of light, but the ejected star matter of AT2018hyz is traveling as fast as 50% the speed of light.
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Black hole is 'burping out' a 'spaghettified' star it devoured years agoRobert Lea is a science journalist in the U.K. whose articles have been published in Physics World, New Scientist, Astronomy Magazine, All About Space, Newsweek and ZME Science. He also writes about science communication for Elsevier and the European Journal of Physics. Rob holds a bachelor of science degree in physics and astronomy from the U.K.’s Open University. Follow him on Twitter sciencef1rst.
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