R V Saraykar
Articles written in Pramana – Journal of Physics
Volume 52 Issue 6 June 1999 pp 553-559 Research Articles
Strong curvature naked singularities in generalized Vaidya space-times
K D Patil R V Saraykar S H Ghate
In this paper, following recent results on generalized Vaidya solutions by Wang, we prove that under certain conditions on generalized mass function, strong curvature naked singularities exist in radiation collapse in monopole-Vaidya space-times and also in charged-Vaidya space-times. We thus unify and generalize results of Dwivedi-Joshi and Lake-Zannias. The general case also covers de Sitter-Vaidya space-time recently treated by Wagh-Maharaj with a view to study existence of naked singularities.
Volume 65 Issue 1 July 2005 pp 17-33
Stability of naked singularity arising in gravitational collapse of Type I matter fields
Considering gravitational collapse of Type I matter fields, we prove that, given an arbitrary C^{2}-mass function
Volume 70 Issue 4 April 2008 pp 587-601 Research Articles
K-causal structure of space-time in general relativity
Sujatha Janardhan R V Saraykar
Using K-causal relation introduced by Sorkin and Woolgar [1], we generalize results of Garcia-Parrado and Senovilla [2,3] on causal maps. We also introduce causality conditions with respect to K-causality which are analogous to those in classical causality theory and prove their inter-relationships. We introduce a new causality condition following the work of Bombelli and Noldus [4] and show that this condition lies in between global hyperbolicity and causal simplicity. This approach is simpler and more general as compared to traditional causal approach [5,6] and it has been used by Penrose
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