Gravitational-wave treasure trove reveals dozens of black hole crashes

Scientists can now catch gravitational waves better than ever before.

Although physicists only observed the first of these cosmic “chirps” in 2015, subsequent improvements in the detectors have opened up more and more of these signals to scientific study. The twin Laser Interferometer Gravitational-Wave Observatory (LIGO) detectors in Louisiana and Washington, plus a European counterpart called Virgo, are currently on another observing hiatus for the coronavirus pandemic and ongoing upgrades, but scientists affiliated with the project have spent their time combing through data to create a new catalog of dozens of gravitational-wave signals detected during the first half of the third joint observing campaign, which ran from April to September 2019.

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