51 citations · 144 across the 7 of their papers we have counts for
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Analytic Relations for Magnifications and Time Delays in Gravitational Lenses with Fold and Cusp Configurations
Arthur B. Congdon, Charles R. Keeton, C. Erik Nordgren
Gravitational lensing provides a unique and powerful probe of the mass distributions of distant galaxies. Four-image lens systems with fold and cusp configurations have two or thre…
Microlensing of an extended source by a power-law mass distribution
Arthur B. Congdon, Charles R. Keeton, S. J. Osmer
Microlensing promises to be a powerful tool for studying distant galaxies and quasars. As the data and models improve, there are systematic effects that need to be explored. Quasar…
Multipole Models of Four-Image Gravitational Lenses with Anomalous Flux Ratios
Arthur B. Congdon, Charles R. Keeton
Anomalous radio flux ratios in four-image gravitational lens systems can be explained by adding a clumpy cold dark matter (CDM) component to the potential of the lens galaxy. Evans…