Rigorous Approach to the Gravitational Lensing

Details Rigorous Approach to the Gravitational Lensing Rigorous Approach to the Gravitational Lensing

2008-04-28

arxiv.org/abs/0804.4331v3

Phys.Rev.D78:023014,2008

Astronomy and Astrophysics

Astrophysics

6 pages, the discussion is revised

Scientific paper

10.1103/PhysRevD.78.023014

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, \Lambda, which confirm the conventional results: The conventional lensing analysis is correct as it is, without any need for correction of O(\Lambda). We also treat the cases of the lensing in generic FRW backgrounds.

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