The Angular Structure of Four-Image Gravitational Lenses

Details The Angular Structure of Four-Image Gravitational Lenses The Angular Structure of Four-Image Gravitational Lenses

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.8001t&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #80.01; Bulletin of the American Astronomical Society, Vol. 34, p.1236

Physics

Scientific paper

Using four-image gravitational lenses in the CfA-Arizona Space Telescope Lens Survey, we probe the angular structure of lens galaxy mass distributions. The models show the lens potential is successfully constrained for four-image lenses. The largest contribution to shear perturbations is found outside of the lens' Einstein ring, which suggests a dramatic, outlying mass component. We find strong evidence that most lens galaxies have extended, flattened dark matter halos. CMT acknowledges support from the NSF/REU program at the University of Chicago's Department of Physics. CRK acknowledges support from a Hubble Fellowship grant, awarded through STScI.

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