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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.CO2012★ 162 cited
Image Analysis for Cosmology: Results from the GREAT10 Galaxy Challenge
T. D. Kitching, S. T. Balan, S. Bridle +25
In this paper we present results from the weak lensing shape measurement GRavitational lEnsing Accuracy Testing 2010 (GREAT10) Galaxy Challenge. This marks an order of magnitude st…