Mass inflation

In general relativity, mass inflation is a phenomenon inside spinning or charged black holes in which the interactions of outgoing and ingoing radiation at the Cauchy horizon cause the internal gravitational mass parameter of the black hole to become unbounded at the Cauchy horizon. It also predicts the existence of a weak null singularity at the Cauchy horizon of a spinning or charged black hole. Mass inflation was confirmed numerically for a spherical charged black hole by Lior Burko in 1997 and for a uncharged rotating black hole by Mihalis Dafermos and Jonathan Luk in 2017.