For the first time, gravitational waves from a distant black hole merger observed by Virgo and both LIGO detectors
Scientists have made the fourth detection of gravitational waves - ripples in the fabric of space and time - formed by the collision of two massive black holes located about 1.8 billion light-years away. The detected gravitational waves - ripples in space and time - were emitted during the final moments of the merger of two black holes with masses about 31 and 25 times the mass of the Sun and located about 1.8 billion light-years away. “It is wonderful to see a first gravitational-wave signal in our brand new Advanced Virgo detector only two weeks after it officially started taking data,” said Jo van den Brand from Vrije Universiteit Amsterdam in the Netherlands, spokesperson of the Virgo collaboration. Advanced LIGO is a second-generation gravitational-wave detector consisting of the two identical interferometers in Louisiana and Washington, and uses precision laser interferometry to detect gravitational waves.
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