120 citations · 238 across the 8 of their papers we have counts for
11 papers · 1 filter
Dark Matter Structures In The Deep Lens Survey
Jeffrey M. Kubo, Hossein Khiabanian, Ian P. Dell'Antonio +2
We present a regularized maximum likelihood weak lensing reconstruction of the Deep Lens Survey F2 field (4 deg^2). High signal-to-noise ratio peaks in our lensing significance map…
Handbook for the GREAT08 Challenge: An image analysis competition for cosmological lensing
Sarah Bridle, John Shawe-Taylor, Adam Amara +35
The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant g…
Photometric Redshifts and Photometry Errors
D. Wittman, P. Riechers, V. E. Margoniner
We examine the impact of non-Gaussian photometry errors on photometric redshift performance. We find that they greatly increase the scatter, but this can be mitigated to some exten…
Photometric Redshifts and Signal-to-Noise
V. E. Margoniner, D. M. Wittman
We investigate the impact of photometric signal-to-noise (S/N) on the precision of photometric redshifts in multi-band imaging surveys, using both simulations and real data. We sim…
Probing the Relation Between X-ray-Derived and Weak-Lensing-Derived Masses for Shear-Selected Galaxy Clusters: I. A781
Neelima Sehgal, John P. Hughes, David Wittman +4
We compare X-ray and weak-lensing masses for four galaxy clusters that comprise the top-ranked shear-selected cluster system in the Deep Lens Survey. The weak-lensing observations…
Spurious Shear from the Atmosphere in Ground-Based Weak Lensing Observations
D. Wittman
Weak lensing observations have the potential to be even more powerful than cosmic microwave background (CMB) observations in constraining cosmological parameters. However, the prac…