Photon redshift and the appearance of a naked singularity
نویسنده
چکیده
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.
منابع مشابه
Gravitational Collapse in Higher Dimension
Spherically symmetric inhomogeneous dust collapse has been studied in higher dimensional spacetime and appearance of naked singularity has been analyzed both for non-marginal and marginally bound cases. It has been shown that naked singularity is possible for any arbitrary dimension in non-marginally bound case. For marginally bound case we have examined the radial null geodesics from the singu...
متن کاملAppearance of the central singularity in spherical collapse
We analyze here the structure of non-radial nonspacelike geodesics terminating in the past at a naked singularity formed as the end state of inhomogeneous dust collapse. The spectrum of outgoing nonspacelike geodesics is examined analytically. The local and global visibility of the singularity is also examined by integrating numerically the null geodesics equations. The possible implications of...
متن کاملPhysical Processes in Naked Singularity Formation
Gravitational collapse is one of the most fruitful subjects in gravitational physics. It is well known that singularity formation is inevitable in complete gravitational collapse. It was conjectured that such a singularity should be hidden by horizons if it is formed from generic initial data with physically reasonable matter fields. Many possible counterexamples to this conjecture have been pr...
متن کاملGravitational collapse and naked singularities
Gravitational collapse is one of the most striking phenomena in gravitational physics. The cosmic censorship conjecture has provided strong motivation for researches in this field. In the absence of general proof for the censorship, many examples have been proposed, in which naked singularity is the outcome of gravitational collapse. Recent development has revealed that there are examples of na...
متن کاملar X iv : m at h - ph / 0 30 70 24 v 1 1 0 Ju l 2 00 3 Naked Singularities in Higher Dimensional Szekeres space - time
In recent years, there is an exhaustive study of gravitational collapse of inhomogeneous spherical dust [1-4]. It is mainly concentrated to central shell focusing singularity. The behaviour of the singularity (black hole or naked singularity) has been analyzed mainly by the studying of outgoing radial null geodesic and the strength is measured using due to Tipler [5]. It has been shown that app...
متن کامل