100 citations · 198 across the 8 of their papers we have counts for
9 papers
Time delay in matched exterior and interior Kottler solutions
Mourad Guenouche
We extend the study of gravitational lensing to photons traversing the lens mass, modeled as a uniform-density fluid described by the interior Kottler (Schwarzschild--de Sitter) so…
Lensing in matched exterior and interior Kottler solutions
Mourad Guenouche
We analyze gravitational lensing in a matched Kottler spacetime with cosmological constant , where a uniform-density fluid sphere described by the interior Kottler solution is s…
Deflection of light and time delay in hyperbolic Einstein-Straus--de Sitter solution
Mourad Guenouche
We analyze strong gravitational lensing by a spherically symmetric mass distribution within the Einstein-Straus-de Sitter framework in a spatially open Universe with negative curva…
Effect of the spatial curvature on light bending and time delay in curved Einstein-Straus--de Sitter spacetime
Mourad Guenouche
A method of general applicability has been developed, whereby the null geodesic equations of the Einstein-Straus-de Sitter metric can be integrated simultaneously in terms of the c…
Deflection of light and time delay in closed Einstein-Straus solution
Mourad Guenouche, Sami Ryad Zouou
We investigate strong lensing by a spherically symmetric mass distribution in the framework of the Einstein-Straus solution with positive cosmological constant and concentrate on t…
Motion of charged particles in a NUTty Einstein-Maxwell spacetime and causality violation
Gérard Clément, Mourad Guenouche
We investigate the motion of electrically charged test particles in spacetimes with closed timelike curves, a subset of the black hole or wormhole Reissner-Nordström-NUT spacetimes…
NUT wormholes
Gérard Clément, Dmitri Gal'tsov, Mourad Guenouche
We show that supercritically charged black holes with NUT provide a new setting for traversable wormholes. This does not require exotic matter, a price being the Misner string sing…
Rehabilitating space-times with NUTs
Gérard Clément, Dmitri Gal'tsov, Mourad Guenouche
We revisit the Taub-NUT solution of the Einstein equations without time periodicity condition, showing that the Misner string is still fully transparent for geodesics. In this case…
Time delay in the Einstein-Straus solution
Kheir-Eddine Boudjemaa, Mourad Guenouche, Sami R. Zouzou
The time delay of strong lensing is computed in the framework of the Einstein-Straus solution. The theory is compared to the observational bound on the time delay of the lens SDSS…