IUCAA Preprints
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Item Spherical and non-spherical gravitational collapse in Hussain spacetime(2011-06-06) Patil, K. D.; Thool, U. S.We investigate the nature of singularities arising in Husain solution. We analyze both spherical and non-spherical gravitational collapse in Husain spacetime. An interesting feature that emerges is that gravitational collapse of spherical cosmological Husain solution lead to the formation of naked singularities, while non-spherical cosmological collapse proceeds to form a black hole. Further strength of naked singularities arising in these spacetimes has been analyzed. It is found that these naked singularities are strong in Tipler’s sense.Item Spherical and non-spherical gravitational collapse in monopole-anti-de sitter-vaidya spacetime(2006-08-10) Patil, K. D.; Thool, U. S.In the present work, we investigate the influence of the monopole field on the occurrence of the spacetime singularities in the gravitational collapse of anti-de Sitter-Vaidya spacetime. It has been found that the spherically symmetric monopole anti-de Sitter-Vaidya spacetime contradicts the CCH, whereas the non-spherical collapse respects it.