Abstract
We analyze the falling time of massless and massive particles to a black hole, using timelike and null geodesics for spaces described by the Kerr and Reissner-Nordström metrics. It is shown that an observer falling to a black hole horizon will see only a finite future of the external universe. The formula obtained can be used in assessing the difference in arrival time of photons and massive particles from Kerr and Reissner-Nordström black holes to an observer on Earth.
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Grib, A.A., Rasulova, A.M. Can one see the infinite future of the universe when falling to Kerr and Reissner-Nordström black holes?. Gravit. Cosmol. 18, 168–174 (2012). https://doi.org/10.1134/S020228931203005X
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DOI: https://doi.org/10.1134/S020228931203005X