219 citations · 1.3k across the 14 of their papers we have counts for
14 papers
Sérsic galaxy models in weak lensing shape measurement: model bias, noise bias and their interaction
Tomasz Kacprzak, Sarah Bridle, Barnaby Rowe +4
Cosmic shear is a powerful probe of cosmological parameters, but its potential can be fully utilised only if galaxy shapes are measured with great accuracy. Two major effects have…
IM3SHAPE: A maximum-likelihood galaxy shear measurement code for cosmic gravitational lensing
Joe Zuntz, Tomasz Kacprzak, Lisa Voigt +3
We present and describe im3shape, a new publicly available galaxy shape measurement code for weak gravitational lensing shear. im3shape performs a maximum likelihood fit of a bulge…
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…
The impact of galaxy colour gradients on cosmic shear measurement
L. M. Voigt, S. L. Bridle, A. Amara +5
Cosmic shear has been identified as the method with the most potential to constrain dark energy. To capitalise on this potential it is necessary to measure galaxy shapes with great…
Gravitational Lensing Accuracy Testing 2010 (GREAT10) Challenge Handbook
Thomas Kitching, Sreekumar Balan, Gary Bernstein +32
GRavitational lEnsing Accuracy Testing 2010 (GREAT10) is a public image analysis challenge aimed at the development of algorithms to analyze astronomical images. Specifically, the…