AAS 207th Meeting, 8-12 January 2006
Session 142 Gravitational Lensing
Poster, Wednesday, 9:20am-6:30pm, January 11, 2006, Exhibit Hall

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[142.11] Gravitational Lensing of Supernovae by Elliptical Navaro-Frenk-White (NFW) Haloes

H. Bagherpour, R. Kantowski, D. Branch, E. Baron (University of Oklahoma)

Galaxies and cluster of galaxies act as gravitational telescopes for objects in their background. The lensing effects caused by these gravitational telescopes have profound effects on the observation of celestial objects.

We present the effects of strong-lensing by galaxies and cluster of galaxies on the observed magnitudes and rates of supernovae. In our study galaxies are considered to have elliptical NFW mass profiles, while cluster of galaxies are treated as spherically symmetric deflectors. We investigate the effects of the ellipticity \epsilon of the galactic mass models and compare the obtained results. Also, we briefly discuss the introduced bias and the calculated gain factors for supernovae.

We acknowledge the financial support from NSF grants AST-0506028 and AST-0204771.

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