63 citations · 122 across the 9 of their papers we have counts for
10 papers · 1 filter
Weak Cosmic Censorship by Overspinning the Kerr-Newman-Kasuya Black Hole with Test Particle
Ayyesha K. Ahmed, Azad A. Siddiqui
We check the weak cosmic censorship conjecture by attempting to overspin the Kerr-Newman-Kasuya black hole with test particle. The study suggests that the Kerr-Newman-Kasuya black…
Holographic Dark Energy with Time Varying n^2 Parameter in Non-Flat Universe
Bushra Majeed, Mubasher Jamil, Azad A. Siddiqui
We consider a holographic dark energy model, with a varying parameter, n, which evolves slowly with time. We obtain the differential equation describing evolution of the dark energ…
Charged Rotating BTZ Black Hole and Thermodynamic Behavior of Field Equations at its Horizon
M. Akbar, Azad A. Siddiqui
In this paper, we study different cases of the charged rotating BTZ black hole with reference to their horizons. For the existence of these cases conditions on mass, charge and ang…
Asymptotic Behaviour of the Proper Length and Volume of the Schwarzschild Singularity
Asghar Qadir, Azad A. Siddiqui
Though popular presentations give the Schwarzschild singularity as a point it is known that it is spacelike and not timelike. Thus it has a "length" and is not a "point". In fact,…
Uniqueness of Flat Spherically Symmetric Spacelike Hypersurfaces Admitted by Spherically Symmetric Static Spactimes
Robert Beig, Azad A. Siddiqui
It is known that spherically symmetric static spacetimes admit a foliation by °at hypersurfaces. Such foliations have explicitly been constructed for some spacetimes, using differe…
K-Slicing the Reissner-Nordstrom Spacetime: Some New Observations
Asghar Qadir, M. Sajid, Azad A. Siddiqui
There were problems encountered in extending the K-slicing of the Schwarzschild and Reissner-Nordstrom (RN) spacetimes [1, 2] to the extreme case, when charge equals mass (in gravi…
Foliation of the Kottler-Schwarzschild-De Sitter Spacetime by Flat Spacelike Hypersurfaces
Azad A. Siddiqui
There exist Kruskal like coordinates for the Reissner-Nordstrom (RN) black hole spacetime which are regular at coordinate singularities. Non existence of such coordinates for the e…
On Quantum Effects Near a Black Hole Singularity
Asghar Qadir, Azad A. Siddiqui
It is pointed out that the claim made by Joshi and Joshi [1], has not been rigorously demonstrated by them. A simpler and more correct proof is provided.
Similarities Between Classical Timelike Geodesics in a Naked Reissner-Nordstrom Singularity Background and the Behaviour of Electrons in Quantum Theory
Asghar Qadir, Azad A. Siddiqui
It is generally assumed that naked singularities must be physically excluded, as they could otherwise introduce unpredictable influences in their future null cones. Considering geo…
Note on flat foliations of spherically symmetric spacetimes
Viqar Husain, Asghar Qadir, Azad A. Siddiqui
It is known that spherically symmetric spacetimes admit flat spacelike foliations. We point out a simple method of seeing this result via the Hamiltonian constraints of general rel…