The finite source size effect and the wave optics in gravitational lensing

Details The finite source size effect and the wave optics in gravitational lensing The finite source size effect and the wave optics in gravitational lensing

2006-01-31

arxiv.org/abs/astro-ph/0601701v1

JCAP 0601 (2006) 023

Astronomy and Astrophysics

Astrophysics

24 pages

Scientific paper

10.1088/1475-7516/2006/01/023

We investigate the finite source size effect in the context of the wave optics in the gravitational lensing. The magnification of an extended source is presented in an analytic manner for the singular isothermal sphere lens model as well as the point mass lens model with the use of the thin lens approximation. The condition that the finite source size effect becomes substantial is demonstrated. As an application, we discuss possible observational consequences of the finite source size effect on astrophysical systems.

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