Invariants of simple gravitational lenses

Details Invariants of simple gravitational lenses Invariants of simple gravitational lenses

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995mnras.272..363k&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 272, Issue 2, pp. 363-368.

Astronomy and Astrophysics

Astronomy

8

Methods, Analytical-Galaxies, Clustering-Cosmology, Miscellaneous-Gravitational Lensing.

Scientific paper

We present approximate tests which can be applied to a newly observed quadruple QSO, or to a quadruplet of extended objects distorted by a foreground cluster of galaxies. These tests indicate whether the responsible gravitational lens may have a simple mass distribution. If the lens galaxy is detected, the tests give an approximate orientation for it, which can be compared with the observed orientation of the galaxy. The tests do not require construction of an explicit lens model, and therefore can save time and effort. In the case of many objects distorted by a cluster, these diagnostics can help to select possible quadruplet candidates.

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