paper

Analytical formulas for gravitational lensing

arXiv:gr-qc/0602106 · doi:10.1103/PhysRevD.73.083004

Abstract

In this paper we discuss a new method which can be used to obtain arbitrarily accurate analytical expressions for the deflection angle of light propagating in a given metric. Our method works by mapping the integral into a rapidly convergent series and provides extremely accurate approximations already to first order. We have derived a general first order formula for a generic spherically symmetric static metric tensor and we have tested it in four different cases.

12 pages, 6 figures; added one section with estimation of the rate of convergence of the method; modified fig.2; added some refs

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Analytical formulas for gravitational lensing · wovepaper