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astro-ph.IM2012★ 138 cited
Means of confusion: how pixel noise affects shear estimates for weak gravitational lensing
Peter Melchior, Massimo Viola
Weak-lensing shear estimates show a troublesome dependence on the apparent brightness of the galaxies used to measure the ellipticity: In several studies, the amplitude of the infe…
astro-ph.IM2010★ 56 cited
Weak gravitational lensing with DEIMOS
Peter Melchior, Massimo Viola, Björn Malte Schäfer +1
We introduce a novel method for weak-lensing measurements, which is based on a mathematically exact deconvolution of the moments of the apparent brightness distribution of galaxies…