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Article overview
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Geometry and topology of singularities in spherical dust collapse | Brien C. Nolan
; Filipe C. Mena
; | Date: |
22 Mar 2002 | Journal: | Class.Quant.Grav. 19 (2002) 2587-2606 | Subject: | gr-qc | Abstract: | We derive some more results on the nature of the singularities arising in the collapse of inhomogeneous dust spheres. (i) It is shown that there are future-pointing radial and non-radial time-like geodesics emerging from the singularity if and only if there are future-pointing radial null geodesics emerging from the singularity. (ii) Limits of various space-time invariants and other useful quantities (relating to Thorne’s point-cigar-barrel-pancake classification and to isotropy/entropy measures) are studied in the approach to the singularity. (iii) The topology of the singularity is studied from the point of view of ideal boundary structure. In each case, the different nature of the visible and censored region of the singularity is emphasized. | Source: | arXiv, gr-qc/0203078 | Services: | Forum | Review | PDF | Favorites |
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