Cosmological constant and time delay
Thomas Schucker, Noureddine Zaimen
TL;DR
This paper calculates how the cosmological constant influences gravitational time delays caused by spherical masses and compares the theoretical predictions with observational data from a specific lensed quasar.
Contribution
It provides a novel calculation of the cosmological constant's effect on time delays without relying on the lens equation, linking theory with observations.
Findings
Cosmological constant affects gravitational time delays.
Theoretical calculations are consistent with observational bounds.
Provides a new approach to analyze lensing time delays.
Abstract
The effect of the cosmological constant on the time delay caused by an isolated spherical mass is calculated without using the lens equation and compared to a recent observational bound on the time delay of the lensed quasar SDSS J1004+4112.
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