The use of light polarization for weak-lensing inversions

Details The use of light polarization for weak-lensing inversions The use of light polarization for weak-lensing inversions

1998-09-28

arxiv.org/abs/astro-ph/9809355v1

Astronomy and Astrophysics

Astrophysics

13 pages, 11 figures, uses mnras style file. Accepted for publication in MNRAS

Scientific paper

10.1046/j.1365-8711.1999.02226.x

The measurement of the integrated optical polarization of weakly gravitationally lensed galaxies can provide considerable constraints on lens models. The method outlined depends on fact that the orientation of the direction of optical polarization is not affected by weak gravitational lensing. The angle between the semi-major axis of the imaged galaxy and the direction of integrated optical polarization thus informs one of the distortion produced by the gravitational lensing. Although the method depends on the polarimetric measurement of faint galaxies, large telescopes and improved techniques should make such measurements possible in the near future.

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