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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…
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…
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…
Mass Follows Light
C. S. Kochanek
We use comparisons between the shapes of gravitational lens galaxies and models for their mass distributions to derive statistical constraints on the alignment of the mass distribu…
PMN J1632-0033: A new gravitationally lensed quasar
Joshua N. Winn, Nicholas D. Morgan, Jacqueline N. Hewitt +6
We report the discovery of a gravitationally lensed quasar resulting from our survey for lenses in the southern sky. Radio images of PMN J1632-0033 with the VLA and ATCA exhibit tw…