Black hole “billiards” may explain strange aspects of 2019 black hole merger
In 2019, the LIGO/VIRGO collaboration picked up a gravitational wave signal from a black hole merger that proved to be one for the record books. Dubbed "GW190521," it was the most massive and most distant yet detected, and it produced the most energetic signal detected thus far, showing up in the data as more of a "bang" than the usual "chirp."
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