58 citations · 493 across the 33 of their papers we have counts for
9 papers · 1 filter
Addendum: Symmetries of the energy-momentum tensor
M. Sharif
In recent papers [1-3], we have discussed matter symmetries of non-static spherically symmetric spacetimes, static plane symmetric spacetimes and cylindrically symmetric static spa…
On the Physical Properties of Spherically Symmetric Self-Similar Solutions
M. Sharif, Sehar Aziz
In this paper, we are exploring some of the properties of the self-similar solutions of the first kind. In particular, we shall discuss the kinematic properties and also check the…
Energy and Momentum in General Relativity
M. Sharif
The energy and momentum for different cosmological models using various prescriptions are evaluated. In particular, we have focused our attention on the energy and momentum for gra…
Force Behaviour in Radiation-Dominated Friedmann Universe
M. Sharif
We consider radiation-dominated Friedmann universe and evaluate its force four-vector and momentum. We analyse and compare the results with the already evaluated for the matter-dom…
Non-Static Spherically Symmetric Perfect Fluid Solutions
M. Sharif, T. Iqbal
We investigate solutions of Einstein field equations for the non-static spherically symmetric perfect fluid case using different equations of state. The properties of an exact sphe…
Matter Collineations of Some Static Spherically Symmetric Spacetimes
M. Sharif
We derive matter collineations for some static spherically symmetric spacetimes and compare the results with Killing, Ricci and Curvature symmetries. We conclude that matter and Ri…