Photon redshift and the appearance of a naked singularity

Abstract

In this paper we analyze the redshift as observed by an external observer receiving photons which terminate in the past at the naked singularity formed in a Tolman-Bondi dust collapse. Within the context of models considered here it is shown that photons emitted from a weak curvature naked singularity are always finitely redshifted to an external observer. Certain cases of strong curvature naked singularities, including the self-similar one, where the photons are infinitely redshifted are also pointed out.

Latex file, 14 pages, no figures, one change in the reference. Accepted for publication in Phys. Rev. D

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