I am interested in the current state of knowledge of strong field General Relativity learned from numerical investigations of gravitational wave packets colliding with each other or black holes.
If someone can point to a good review article that is not paywalled, that would be wonderful, but in particular it would be great to know more about:
- Has the formation of a black hole from collision of gravitational wave packets (localized, finite energy models) been seen in a simulation?
- Can a sufficiently strong gravitational wave distort a blackhole violently enough that the scattering results in two black holes of smaller mass and gravitational radiation leaving?
- Can two black holes scatter such that a third is formed?
