Gravitational Lensing of Distant Supernovae

Details Gravitational Lensing of Distant Supernovae Gravitational Lensing of Distant Supernovae

2005-03-21

arxiv.org/abs/astro-ph/0503446v1

Astronomy and Astrophysics

Astrophysics

To appear in Proceedings of the 22th Texas Symposium on Relativistic Astrophysics

Scientific paper

We use a series of ray-tracing experiments to determine the magnification distribution of high-redshift sources by gravitational lensing. We determine empirically the relation between magnification and redshift, for various cosmological models. We then use this relation to estimate the effect of lensing on the determination of the cosmological parameters from observations of high-z supernovae. We found that, for supernovae at redshifts z<1.8, the effect of lensing is negligible compared to the intrinsic uncertainty in the measurements. Using mock data in the range 1.8

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