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Exchange of signals around the event horizon in Schwarzschild space-time

Red shift in communication and possibility of interaction is discussed for objects around the event horizon of Schwarzschild space-time. It is pointed out that the arrow of time within the horizon cannot always be inferred by observations carried out outside. Two scenarios are presented for the causal structure of the space-time and it is found that in one of them extended objects fall apart into their elementary constituents by crossing the horizon.

preprint2012arXivOpen access

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