Comments on the gravitational lensing magnification

Details Comments on the gravitational lensing magnification Comments on the gravitational lensing magnification

1998-08-29

arxiv.org/abs/astro-ph/9808338v1

Prog. Theor. Phys., 99, 1085, (1998)

Astronomy and Astrophysics

Astrophysics

6 pages, no figures, LaTex using ptptex.sty and ptp-text.sty

Scientific paper

10.1143/PTP.99.1085

We rederive a relation between gravitational lensing magnification relative to the standard Friedmann distance and one relative to the Dyer-Roeder distance by investigating the null geodesic deviation equation. We show that the relation comes from a natural consequence of the definition of the lensing magnification matrices and is not based on the averaging of the magnifications, which has conventionally been used to derive it. We therefore conclude that the relation is true for each individual ray bundle.

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