2002 (IPP)

Permanent URI for this collectionhttp://localhost:4000/handle/11007/627

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Has files: YesSubject: search.filters.subject.Gravitational collapse

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    Why do naked singularities form in gravitational
    (2002-03-12) Joshi, P. S.; Dadhich, Naresh; Roy, Maartens
    We investigate what are the key physical features that cause the development of a naked singularity, rather than a black hole, as the end-state of spherical gravitational collapse. We show that sufficiently strong shearing effects near the singularity delay the formation of the apparent horizon. This exposes the singularity to an external observer, in contrast to a black hole, which is hidden behind an event horizon due to the early formation of an apparent horizon
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    Gravitational collapse of null strange quark fluid and cosmic censorship
    (2002-04-01) Ghosh, S. G.; Dadhich, Naresh
    We study gravitational collapse of the general spherically symmetric null strange quark fluid having the equation of state, p = (ρ − 4B)/n, where B is the bag constant. An interesting feature that emerges is that the initial data set giving rise to naked singularity in the Vaidya collapse of null fluid gets covered due to the presence of strange quark matter component. Its implication to the Cosmic Censorship Conjecture is discussed.
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    Gravitational collapse of type II fluid in higher dimensional space-times
    (2002-04-30) Ghosh, S. G.
    We find the general solution of the Einstein equation for spherically symmetric collapse of Type II fluid (null strange quark fluid) in higher dimensions. It turns out that the nakedness and curva- ture strength of the shell focusing singularities carry over to higher dimensions. However, there is shrinkage of the initial data space for a naked singularity of the Vaidya collapse due to the presence of strange quark matter.