Galaxy Structure and External Perturbations in Gravitational Lenses

Details Galaxy Structure and External Perturbations in Gravitational Lenses Galaxy Structure and External Perturbations in Gravitational Lenses

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20312007k&link_type=abstract

American Astronomical Society Meeting 203, #120.07; Bulletin of the American Astronomical Society, Vol. 35, p.1407

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the effect of galaxy structures and external perturbations in four quadruple lens systems. The results clearly indicate that the higher-order multipoles and the external perturbations significantly contribute to the lens potential. In particular some of the recently reported anomalous flux ratios may be fitted by smooth mass model. We also find that complicated group potential makes the fitting very difficult.
This work is supported by Grant-in-Aid for JSPS fellows.

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