142 citations · 2.3k across the 65 of their papers we have counts for
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Characterizing the Best Cosmic Telescopes with the Millennium Simulations
K. Decker French, Kenneth C. Wong, Ann I. Zabludoff +3
Certain configurations of massive structures projected along the line of sight maximize the number of detections of gravitationally lensed galaxies. We characterize such…
Mapping Compound Cosmic Telescopes Containing Multiple, Projected Cluster-Scale Halos
S. Mark Ammons, Kenneth C. Wong, Ann I. Zabludoff +1
Lines of sight with multiple, projected, cluster-scale halos have high total masses and complex lens plane interactions that can boost the area of magnification, or etendue, making…
A New Approach to Identifying the Most Powerful Gravitational Lensing Telescopes
Kenneth C. Wong, Ann I. Zabludoff, S. Mark Ammons +3
The best gravitational lenses for detecting distant galaxies are those with the largest mass concentrations and the most advantageous configurations of that mass along the line of…
Optimal Mass Configurations for Lensing High-Redshift Galaxies
Kenneth C. Wong, S. Mark Ammons, Charles R. Keeton +1
We investigate the gravitational lensing properties of lines of sight containing multiple cluster-scale halos, motivated by their ability to lens very high-redshift (z ~ 10) source…
Mass of the Southern Black Hole in NGC 6240 from Laser Guide Star Adaptive Optics
Anne M. Medling, S. Mark Ammons, Claire E. Max +3
NGC 6240 is a pair of colliding disk galaxies, each with a black hole in its core. We have used laser guide star adaptive optics on the Keck II telescope to obtain high-resolution…
AGN Unification at z ~ 1: u - R Colors and Gradients in X-ray AGN Hosts
S. Mark Ammons, David J. V. Rosario, David C. Koo +8
We present uncontaminated rest-frame u - R colors of 78 X-ray-selected AGN hosts at 0.5 < z < 1.5 in the Chandra Deep Fields measured with HST/ACS/NICMOS and VLT/ISAAC imaging. We…