Ligo mergers
All that hard work paid off with the discovery of GW170729, GW170809, GW170818, and GW170823, referencing the dates on which the black holes were detected. "Having a collection of events is how we learn things about the Universe that can't be learned from just a few observations," Larson wrote. Among the things scientists have learned so far: all stellar black holes were formed from stars 45 times less than the mass of our Sun. That can tell scientists something about how black holes form and grow together, which can in turn yield insights into the evolution of stars.
The National Science Foundation's LIGO (Laser Interferometer Gravitational-Wave Observatory) and the European-based VIRGO gravitational-wave detector have published new results from the first two Observing runs. Four new black hole mergers are newly announced, The LIGO and Virgo collaborations have now confidently detected gravitational waves from a total of 10 stellar-mass binary black hole mergers and one merger of neutron stars, which are the dense, spherical remains of stellar explosions.
Mergers indeed. :)
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