167 citations · 987 across the 12 of their papers we have counts for
9 papers · 1 filter
Shear measurement bias I: dependencies on methods, simulation parameters and measured parameters
Arnau Pujol, Florent Sureau, Jerome Bobin +3
We present a study of the dependencies of shear bias on simulation (input) and measured (output) parameters, noise, point-spread function anisotropy, pixel size, and the model bias…
GREAT3 results I: systematic errors in shear estimation and the impact of real galaxy morphology
Rachel Mandelbaum, Barnaby Rowe, Robert Armstrong +40
We present first results from the third GRavitational lEnsing Accuracy Testing (GREAT3) challenge, the third in a sequence of challenges for testing methods of inferring weak gravi…
The Third Gravitational Lensing Accuracy Testing (GREAT3) Challenge Handbook
Rachel Mandelbaum, Barnaby Rowe, James Bosch +28
The GRavitational lEnsing Accuracy Testing 3 (GREAT3) challenge is the third in a series of image analysis challenges, with a goal of testing and facilitating the development of me…
A simple fitting method (gfit) for galaxy shape measurement in weak lensing surveys
Marc Gentile, Frederic Courbin, Georges Meylan
It is anticipated that the large sky areas covered by planned wide-field weak lensing surveys will reduce statistical errors to such an extent that systematic errors will instead b…
Interpolating point spread function anisotropy
M. Gentile, F. Courbin, G. Meylan
Planned wide-field weak lensing surveys are expected to reduce the statistical errors on the shear field to unprecedented levels. In contrast, systematic errors like those induced…
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…