GW190412

GW190412 is the name given to a gravitational wave event detected by the LIGO and Virgo observatories on April 12, 2019. This event is notable for being the first clear detection of a gravitational wave signal that originated from the merger of two black holes that had significantly different masses. The signal was identified as originating from the merger of a black hole approximately 30 times the mass of the Sun and another black hole about 8 times the mass of the Sun.