79 citations · 656 across the 50 of their papers we have counts for
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A Type D Non-Vacuum Spacetime with Causality Violating Curves, and its Physical Interpretation
Faizuddin Ahmed
We present a topologically trivial, non-vacuum solution of the Einstein's field equations in four-dimensions, which is regular everywhere. The metric admits circular closed timelik…
Axially Symmetric Null dust Spacetime, Naked Singularity and Cosmic Time Machine
Faizuddin Ahmed
In this article, we present a gravitational collapse null dust solution of the Einstein field equations. The spacetime is regular everywhere except on the symmetry axis where it po…
A type N radiation field solution with in a curved space-time and closed time-like curves
Faizuddin Ahmed
An anti-de Sitter background four-dimensional type N solution of the Einstein's field equations, is presented. The matter-energy content pure radiation field satisfies the null ene…
Cylindrically symmetric, Asymptotically flat, Petrov Type D spacetime with a Naked Curvature Singularity and Matter Collapse
Faizuddin Ahmed
We present a cylindrically symmetric, Petrov type D, nonexpanding, shear free and vorticity free solution of Einstein's field equations. The spacetime is asymptotically flat radial…