Time delay in the Einstein-Straus solution
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Date
2011-02-08
Authors
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Kheir-Eddine Boudjemaa
Abstract
We compute the time delay of strong lensing in the framework of the
Einstein-Straus solution in presence of a cosmological constant and restrict ourselves
to the case of a spatially flat universe. The calculations are done to first order in the
ratio of Schwarzschild radius to peri-lens. We apply our results to the lensed quasar
SDSS J1004+4112. Our predictions for the time delay between the images C and D of
the quasar range from 6 to 13 years and are compatible with the experimental lower
bound.