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10 papers
A curious electrovac spacetime as limit of the NUT space
Naresh Dadhich, L K Patel
We take the limit of the NUT space which yields a non flat space and show that source of its curvature is electromagnetic field generated by the NUT parameter defining the…
Domain Walls in Kaluza-Klein spacetime
L. K. Patel, Naresh Dadhich, R. Tikekar
Three families of exact solutions of Einstein field equations are found. Each family contains three parameters. Two of these families represent thick domain walls in a five dimensi…
Higher Dimensional Analogue of McVittie Solution
L. K. Patel, R. Tikekar, Naresh Dadhich
A generalization of the McVittie solution, representing spacetime of a mass particle placed in (n+2) dimensional Robertson-Walker universe is reported.
Exact solutions for null fluid collapse in higher dimensions
L. K. Patel, Naresh Dadhich
A large family of inhomogeneous non-static spherically symmetric solutions of the Einstein equation for null fluid in higher dimensions has been obtained. It encompasses higher dim…
A simple shear-free non-singular spherical model with heat flux
Naresh Dadhich, L. K. Patel
We obtain an exact simple solution of the Einstein equation describing a spherically symmetric cosmological model without the big-bang or any other kind of singularity. The matter…
Characterisation of orthogonal perfect fluid cosmological spacetimes
Naresh Dadhich, L. K. Patel, K. S. Govinder +1
We consider the general orthogonal metric separable in space and time variables in comoving coordinates. We then characterise perfect fluid models admitted by such a metric. It tur…