Shear-free gravitational collapse is strongly censored

Details Shear-free gravitational collapse is strongly censored Shear-free gravitational collapse is strongly censored

2003-12-30

arxiv.org/abs/gr-qc/0312123v1

Phys.Rev.D69:021502,2004

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

6 pages, revtex4; accepted for publication in Phys. Rev. D Rapid Comm

Scientific paper

10.1103/PhysRevD.69.021502

We consider spherically symmetric spacetimes with matter whose timelike flow is assumed to be shear-free. A number of results on the formation and visibility of spacetime singularities is proven, with the main one being that shear-free collapse cannot admit locally naked singularities (which implies absence of globally naked singularities). We conjecture that shear is a necessary condition for the occurrence of locally naked singularities in generic gravitational collapse.

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