Black Holes Shouldn't be Able to Merge, but Dozens of Mergers Have Been Detected. How Do They Do It? - by spacewriter
If this is actually what’s happening, then the black holes pass closer and closer together under the effect of the gravitational interaction. Eventually, a merger occurs. That sets off gravitational waves that we can detect here on Earth. When two black holes are in such an elongated orbit, their gravitational wave signal has characteristic “fingerprints”. Those are clues that can be studied for clues to where the two objects met.A team of researchers led by Dr.
“I like to think of black hole binaries like dance partners”, said Dr. Romero-Shaw. “When a pair of black holes evolve together in isolation, they’re like a couple performing a slow waltz alone in the ballroom. It’s very controlled and careful; beautiful, but nothing unexpected.
There are a lot of these collisional dances to study. Since 2015, at least 85 pairs of black holes have crashed into each other and been detected by the LIGO-Virgo-KAGRA Collaboration. Based on this finding, astronomers in the consortium know these cosmic collisions happen pretty often. The next steps are to observe as many of these as possible, particularly with ever-improving instrumentation.
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