Could you explain exactly why the Penrose diagram for this metric looks like this? Where does each line come from and why? Why are the singularities vertical and not horizontal as for the Schwarzschild metric?
I know that, but it should result from mathematics, and I can't find the calculations anywhere - I looked through Hawking's and Penrose's books, publications and videos on YT, but I can't find it anywhere.
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Could you explain exactly why the Penrose diagram for this metric looks like this? Where does each line come from and why? Why are the singularities vertical and not horizontal as for the Schwarzschild metric?
singularities are vertical because r is not timelike coordinate and t is not space-like coordinate anymore at r
I know that, but it should result from mathematics, and I can't find the calculations anywhere - I looked through Hawking's and Penrose's books, publications and videos on YT, but I can't find it anywhere.