Gravitational Lensing of Polarized Radio Sources

Details Gravitational Lensing of Polarized Radio Sources Gravitational Lensing of Polarized Radio Sources

Dec 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000aas...19712302b&link_type=abstract

American Astronomical Society, 197th AAS Meeting, #123.02; Bulletin of the American Astronomical Society, Vol. 32, p.1608

Astronomy and Astrophysics

Astronomy

Scientific paper

Polarization has been shown to be invariant under gravitational lensing and therefore can be used to constrain lensing models. In particular, if the polarization is correlated with the intrinsic morphology of the source (for example, the synchrotron emission from radio jets), then one can detect weak gravitational lensing by measuring deviations from this correlation. This technique has the advantage of sampling continuously the lensing potential and can therefore constrain the shape of the mass distribution. In the case of multiple imaging, the polarization can add constraints to the lensing model, since it is mapped as a vector quantity as opposed to the intensity, which maps as a scalar. This paper will describe the technique and results of using polarization to constrain gravitational lens models.

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