Why do naked singularities form in gravitational collapse? II

Journal Article · Fri Oct 15 00:00:00 EDT 2004 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.70.087502· OSTI ID:20705551

Joshi, Pankaj S; Goswami, Rituparno ^[1]; Dadhich, Naresh ^[2]

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1. Tata Institute for Fundamental Research, Mumbai (India)
2. Inter-University Center for Astronomy and Astrophysics, Pune (India)

We examine physical features that could lead to formation of a naked singularity rather than black hole, as end state of spherical collapse. Generalizing earlier results on dust collapse to general type I matter fields, it is shown that collapse always creates black hole if shear vanishes or density is homogeneous. It follows that nonzero shear is a necessary condition for singularity to be visible to external observers, when trapped surface formation is delayed by shearing forces or inhomogeneity within the collapsing cloud.

• OSTI ID: 20705551
• Journal Information: Physical Review. D, Particles Fields, Vol. 70, Issue 8; Other Information: DOI: 10.1103/PhysRevD.70.087502; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BLACK HOLES
COSMOLOGY
DENSITY
EINSTEIN FIELD EQUATIONS
GRAVITATIONAL COLLAPSE
SHEAR
SINGULARITY