Re: Remnants ?
In that sentence, 'remnants' basically reads as "matter kicked out by forces resulting from a merger of two or more black holes".
Nothing came out of the singularity as such - the gravitational waves are a result of mass being transformed into energy by the massive forces involved in a merger of two singularities and their accompanying matter within the event horizons.
They in turn seem to have an effect on the matter sucked within the event horizons of the merging black holes, but not part of either singularity, which causes the kick and for 'remnants' to escape as a result.
Biting the hand that feeds IT
