140 citations · 830 across the 21 of their papers we have counts for
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gr-qc2009★ 20 cited
A Proposal for Determining the Energy Content of Gravitational Waves by Using Approximate Symmetries of Differential Equations
Ibrar Hussain, F. M. Mahomed, Asghar Qadir
Since gravitational wave spacetimes are time-varying vacuum solutions of Einstein's field equations, there is no unambiguous means to define their energy content. However, Weber an…
gr-qc2009★ 34 cited
Approximate Noether Symmetries of the Geodesic Equations for the Charged-Kerr Spacetime and Rescaling of Energy
Ibrar Hussain, F. M. Mahomed, Asghar Qadir
Using approximate symmetry methods for differential equations we have investigated the exact and approximate symmetries of a Lagrangian for the geodesic equations in the Kerr space…
gr-qc2009
Approximate Symmetries of Lagrangians for Plane Symmetric Gravitational Wave-Like Spacetimes
Ibrar Hussain, Asghar Qadir
Using Lie symmetry methods for differential equations we have investigated the symmetries of a Lagrangian for a plane symmetric static spacetime. Perturbing this Lagrangian we expl…