The conjecture that they can be completely described by charge, angular momentum, and mass is known as the no hair theorem.
One string theory proposal treats them as fuzzballs and a proposed way of extracting energy from them is the Penrose process. The Reissner-Nordström type have nonzero charge. The conjecture that they can be completely described by charge, angular momentum, and mass is known as the no hair theorem. One region of them is known as ergosphere, and they can be created by (*) compacting a mass below its Schwarzschild radius. Information can not travel back past their event horizon, and at their centers are singularities. For 10 points, name these objects from which no mass or light can escape.
One string theory proposal treats them as fuzzballs and a proposed way of extracting energy from them is the Penrose process.
{black holes}