IUCAA Preprints

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Author: search.filters.author.Ghosh, S. G.Subject: search.filters.subject.Gravitational collapse

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    Collapsing shells of radiation in higher dimensional spacetime and cosmic censorship conjecture
    (2001-06-26) Ghosh, S. G.; Saraykar, R. V.; Beesham, A.
    Gravitational collapse of radiation shells in a non self-similar higher dimensional spherically symmetric spacetime is studied. Strong curvature naked singularities form for a highly inhomogeneous collapse, violating the cosmic censorship conjecture. As a special case, self similar models can be constructed.
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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.