GW170104
GW170104 is a gravitational-wave event detected on January 4, 2017 by the LIGO observatories. The signal was observed in both LIGO Hanford and LIGO Livingston detectors, with no confirmed electromagnetic counterpart reported. The event occurred during a period when Virgo was not in a sensitive observing mode for that sky region, so the network localization was relatively broad.
The signal originated from the merger of two black holes. The component masses are estimated to be
GW170104 contributed to the expanding catalog of gravitational-wave discoveries that confirmed the population of stellar-mass black-hole