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Lens Galaxies vs. CDM
Charles R. Keeton
By directly probing mass distributions, gravitational lensing offers several new tests of the CDM paradigm. Lens statistics place upper limits on the dark matter content of ellipti…
Discovering Mass Clumps in Distant Galaxies with Lensing: The Case of B1422+231
Charles R. Keeton
Substructure in distant gravitational lens galaxies can be detected because it alters the brightnesses and shapes of the lensed images. The optical and radio flux ratios in the fou…
Computational Methods for Gravitational Lensing
Charles R. Keeton
Modern applications of strong gravitational lensing require the ability to use precise and varied observational data to constrain complex lens models. I discuss two sets of computa…
A Catalog of Mass Models for Gravitational Lensing
Charles R. Keeton
Many different families of mass models are used in modern applications of strong gravitational lensing. I review a wide range of popular models, with two points of emphasis: (1) a…