A black hole spewing out material is nothing new, but this is the first time that astronomers found one doing so years after initially shredding a star. More specifically, this was a star the black hole 665 million light-years from Earth shredded in October 2018 and it hasn’t swallowed anything since.
Their findings determined that the black hole is ejecting material traveling at half of the speed of light when it reanimated in June 2021 and called the tidal disruption event (TDE) AT2018hyz. There was radio silence for the first three years, and now it has begun lighting up the skies to become one of the most radio luminous TDEs ever observed.
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This caught us completely by surprise — no one has ever seen anything like this before. We applied for Director’s Discretionary Time on multiple telescopes, which is when you find something so unexpected, you can’t wait for the normal cycle of telescope proposals to observe it,” said Yvette Cendes, a research associate at the Center for Astrophysics | Harvard & Smithsonian (CfA) and lead author of a new study analyzing the phenomenon.
