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Noise bias in weak lensing shape measurements
Alexandre Refregier, Tomasz Kacprzak, Adam Amara +2
Weak lensing experiments are a powerful probe of cosmology through their measurement of the mass distribution of the universe. A challenge for this technique is to control systemat…
Measurement and Calibration of Noise Bias in Weak Lensing Galaxy Shape Estimation
Tomasz Kacprzak, Joe Zuntz, Barnaby Rowe +5
Weak gravitational lensing has the potential to constrain cosmological parameters to high precision. However, as shown by the Shear TEsting Programmes (STEP) and GRavitational lEns…
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…