@LIGO @ego_virgo @PhysRevLett The addition of @ego_virgo to the network improves how well we localise sources on the sky: for #GW170814 over a factor of 10 #bravoVirgo!

Hi #GW170814, a new #BinaryBlackHole detection, this time from @LIGO & @ego_virgo! http://ligo.org/detections/ #BravoVirgo #GRavitationalWaves