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astro-ph2001
Detection of CDM Substructure
C. S. Kochanek, N. Dalal
The properties of multiple image gravitational lenses require a fractional surface mass density in satellites of f=0.02 (0.006 < f < 0.07 at 90% confidence) that is consistent with…
astro-ph2001
Rapid Calculation of Equatorial Rotation Curves
C. S. Kochanek
We derive a simple, fast one-dimensional integral for the equatorial rotation curve of a thin disk with surface density Sigma(R) modeled as a spheroid with axis ratio q. The result…
astro-ph2001
Dynamical Probes of The Halo Mass Function
C. S. Kochanek
We explore the relationship between the mass function of CDM halos and dynamical probes of the mass function such as the distribution of gravitational lens separations and the loca…