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Comment on “Strength and genericity of singularities in Tolman–Bondi–de Sitter collapse” and a note on central singularities

Nolan, Brien C and Mena, Filipe C. and Gonçalves, Sérgio M.C.V. (2002) Comment on “Strength and genericity of singularities in Tolman–Bondi–de Sitter collapse” and a note on central singularities. Physics Letters A, 294 (2). pp. 122-125. ISSN 0375-9601. https://resolver.caltech.edu/CaltechAUTHORS:20170823-133848258

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Abstract

It has been claimed in Phys. Lett. A 287 (2001) 53 that the Lemaitre–Tolman–Bondi–de Sitter solution always admits future-pointing radial time-like geodesics emerging from the shell-focussing singularity, regardless of the nature of the (regular) initial data. This is despite the fact that some data rule out the emergence of future pointing radial null geodesics. We correct this claim and show that, in general in spherical symmetry, the absence of radial null geodesics emerging from a central singularity is sufficient to prove that the singularity is censored.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/S0375-9601(02)00037-3DOIArticle
http://www.sciencedirect.com/science/article/pii/S0375960102000373PublisherArticle
Additional Information:© 2002 Elsevier Science B.V. Received 20 August 2001, Revised 4 January 2002, Accepted 9 January 2002, Available online 25 January 2002. Communicated by P.R. Holland. B.C.N. acknowledges support from the DCU Albert College Fellowship scheme. F.C.M. thanks CMAT, U. Minho and FCT (Portugal) for grant PRAXIS XXI BD/16012/98. S.M.C.V.G. acknowledges the support of FCT (Portugal) grant PRAXIS XXI-BPD-16301-98, and NSF grants AST-9731698 and PHY-0099568.
Funders:
Funding AgencyGrant Number
DCU Albert College Fellowship schemeUNSPECIFIED
CMAT, U. MinhoUNSPECIFIED
FCT (Portugal)PRAXIS XXI-BPD-16301-98
NSFAST-9731698
NSFPHY-0099568
Subject Keywords:Cosmic censorship Naked; singularity; Black hole
Issue or Number:2
Classification Code:PACS: 04.20.Dw; 04.20.Ex
Record Number:CaltechAUTHORS:20170823-133848258
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170823-133848258
Official Citation:Brien C Nolan, Filipe C Mena, Sérgio M.C.V Gonçalves, Comment on “Strength and genericity of singularities in Tolman–Bondi–de Sitter collapse” and a note on central singularities, Physics Letters A, Volume 294, Issue 2, 2002, Pages 122-125, ISSN 0375-9601, http://dx.doi.org/10.1016/S0375-9601(02)00037-3. (http://www.sciencedirect.com/science/article/pii/S0375960102000373)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80735
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:24 Aug 2017 21:50
Last Modified:03 Oct 2019 18:34

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