80 citations · 151 across the 3 of their papers we have counts for
4 papers
Performance of internal Covariance Estimators for Cosmic Shear Correlation Functions
O. Friedrich, S. Seitz, T. F. Eifler +1
Data re-sampling methods such as the delete-one jackknife are a common tool for estimating the covariance of large scale structure probes. In this paper we investigate the concepts…
Weak lensing by galaxy troughs in DES Science Verification data
D. Gruen, O. Friedrich, A. Amara +89
We measure the weak lensing shear around galaxy troughs, i.e. the radial alignment of background galaxies relative to underdensities in projections of the foreground galaxy field o…
Characterization and correction of charge-induced pixel shifts in DECam
Daniel Gruen, Gary M. Bernstein, Mike Jarvis +4
Interaction of charges in CCDs with the already accumulated charge distribution causes both a flux dependence of the point-spread function (an increase of observed size with flux,…
Implementation of robust image artifact removal in SWarp through clipped mean stacking
D. Gruen, S. Seitz, G. M. Bernstein
We implement an algorithm for detecting and removing artifacts from astronomical images by means of outlier rejection during stacking. Our method is capable of addressing both smal…