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Abstract: We give simple and general explanation to the effect of unbound accelerationof particles by black holes. It is related to the fact that the scalar productof a timelike vector of the four-velocity of an ingoing particle and thelightlike horizon generator tends to zero in some special cases, so thecondition of -motion forward in time- is marginally satisfied. In this sense,an ingoing particle with special relation between parameters imitates theproperty of infinite redshift typical of any outgoing particle near the futurehorizon of a black hole. We check this assertion using the Reissner-Nordstromand rotating axially-symmetric metrics as examples.



Autor: Oleg B. Zaslavskii

Fuente: https://arxiv.org/



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