3 problems

A subextremal black hole is a black hole that is not extremal, and a continuous process is one in which the spacetime and matter fields remain regular and obey the weak energy cond…

Consider the ultra-relativistic scattering problem, in which compact objects or particles collide with kinetic energy much greater than their rest-mass energy. Source-independence…

Let two black holes scatter with impact parameter $b$, and let $b_{crit}$ denote the critical impact parameter at the threshold of formation of a central black hole; for larger imp…