Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21115202a&link_type=abstract
American Astronomical Society, AAS Meeting #211, #152.02; Bulletin of the American Astronomical Society, Vol. 39, p.1003
Astronomy and Astrophysics
Astronomy
Scientific paper
Strong gravitational lenses are becoming increasingly more useful probes of cosmology and galaxy structure as observations and models of lenses improve. However, ignoring the environments of these lenses can lead to substantial biases in obtaining and interpreting science results from strong lenses. I have taken a census of lens environments to statistically quantify this bias; this is a critical step toward analyzing future datasets of hundreds of strong lenses (ie. from SNAP and LSST). Furthermore, knowledge of the lens environments can help in the interpretation of structural parameters of the lenses. In particular, I have found that lenses that are best modeled with steep mass slopes are likely to be associated with a perturbing companion, as is suggested by N-body simulations. These lenses may serve as a unique probe of galaxy-galaxy interactions.
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