Rigorous Approach to the Gravitational Lensing

Abstract

We revisit a weak gravitational lensing problem by constructing a setup which describes the actual system as accurately as possible and solving the null geodesic equations. Details are given for the case of a Universe driven only by a cosmological constant, Λ, which confirm the conventional results: The conventional lensing analysis is correct as it is, without any need for correction of O(Λ). We also treat the cases of the lensing in generic FRW backgrounds.

6 pages, the discussion is revised

References in corpus (2)

• The Contribution of the Cosmological Constant to the Relativistic Bending of Light Revisited
• On the influence of the cosmological constant on gravitational lensing in small systems