IUCAA Preprints

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Author: search.filters.author.Tikekar, R.Subject: search.filters.subject.General relativity

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    On relativistic models of strange stars
    (2006-01-01) Tikekar, R.; Jotania, Kanti
    The superdense stars with mass to size ratio greater than 0.3 are expected to be made up of strange matter. The ansatz prescrbing ge- ometry of a 3-paraboloid immersed in 4-dimensional Euclidean space for the 3-space of the interior spacetime of superdense star is shown to provide two parameter family of physically viable relativistic models of strange stars. The compact stellar con gurations with mass to size ratio greater than 0.3 are likely to admit only strange star interpretation.
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    Non-adiabatic gravitational collapse of a superdense star
    (2010-06-01) Sarwe, S. B.; Tikekar, R.
    The relativistic equations governing the non-adiabatic shear-free collapse of massive superdense stars in the presence of dissipative forces producing heat flow in the background of space–times of the Vaidya–Tikekar ansatz with associated physical three-spaces that have the three-spheroidal geometry are formulated. It is shown how the system can be used to examine the development and progress of the collapse during subsequent epochs until the radiating star becomes a black hole.