Doesn't really make sense to me.
That collision, I thought, resulted in a bigger neutron star and not a black hole, according to the observation I seem to recall.
And even if it did somehow turn into a black hole after some time, how can that effect the gravity field of the new object at a distance?
I believe at best these are separate events that just happened in the same area of the sky at similar times from our point of observation.
Biting the hand that feeds IT
