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On November 15, 2017, LIGO Scientific Collaboration announced the observation of another binary black hole coalescence. The gravitational waves were observed by the twin LIGO detectors on June 8, 2017. This is the lightest black hole binary observed so far, with component masses 12 and 7 times the mass of the sun.
The announcement news release-
LIGO and Virgo announce the detection of a black hole binary merger from June 8, 2017
The preprint of the paper-
GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence
The announcement news release-
LIGO and Virgo announce the detection of a black hole binary merger from June 8, 2017
The preprint of the paper-
GW170608: Observation of a 19-solar-mass Binary Black Hole Coalescence