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View Full Version : How does one know the energy of a Black Hole?


witsie
Dec15-08, 05:55 PM
When solving the field equations for free space, the Schwarzschild solution emerges. There is an asymptote in the Ricci tensor at r=0. Can we treat this as a delta function? If we can (or even if we can't) what is the energy (mass) of the black hole, and what is its relationship to the number M.

I would expect that the energy would simply be Mc^2, but if it is why is it so, and is it so for all reference frames?