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LensMEM: A Gravitational Lens Inversion Algorithm Using the Maximum Entropy Method
S. Wallington, C. S. Kochanek, R. Narayan
We present a new algorithm for inverting poorly resolved gravitational lens systems using the maximum entropy method (MEM). We test the method with simulations and then apply it to…
Deprojection of Axially Symmetric Objects
C. S. Kochanek, G. B. Rybicki
The deprojection of axisymmetric density distributions is generally indeterminate to within the addition of certain axisymmetric distributions (konus densities) that are invisible…
Gravitational Lenses and the Structure of Galaxies
C. S. Kochanek
Nearly singular isothermal mass distributions with small core radii are consistent with stellar dynamics, lens statistics, and lens models as a model for E/S0 galaxies. Models like…
A Technical Memorandum On Core Radii In Lens Statistics
C. S. Kochanek
Quantitative estimates of lensing probabilities must be self-consistent. In particular, for asymptotically isothermal models: (1) using the correction for the velocit…
The Mass Distribution of the Lens Galaxy in MG1131+0456
G. H. Chen, C. S. Kochanek, J. N. Hewitt
We present the results of modeling 5, 8 and 15 GHz maps of the gravitational lens MG1131+0456 using the LensClean algorithm. Two models for the mass distribution in the lens were f…