Bridle, S and Shawe-Taylor, J and Amara, A and Applegate, D and Balan, ST and Berge, J and Bernstein, G and Dahle, H and Erben, T and Gill, M and Heavens, A and Heymans, C and High, FW and Hoekstra, H and Jarvis, M and Kirk, D and Kitching, T and Kneib, JP and Kuijken, K and Lagatutta, D and Mandelbaum, R and Massey, R and Mellier, Y and Moghaddam, B and Moudden, Y and Nakajima, R and Paulin-Henriksson, S and Pires, S and Rassat, A and Refregier, A and Rhodes, J and Schrabback, T and Semboloni, E and Shmakova, M and Van Waerbeke, L and Witherick, D and Voigt, L and Wittman, D (2009) HANDBOOK FOR THE GREAT08 CHALLENGE: AN IMAGE ANALYSIS COMPETITION FOR COSMOLOGICAL LENSING. ANN APPL STAT , 3 (1) 6 - 37. 10.1214/08-AOAS222.
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The GRavitational lEnsing Accuracy Testing 2008 (GREAT08) Challenge focuses on a problem that is of crucial importance for future observations in cosmology. The shapes of distant galaxies can be used to determine the properties of dark energy and the nature of gravity, because light from those galaxies is bent by gravity from the intervening dark matter. The observed galaxy images appear distorted, although only slightly, and their shapes must be precisely disentangled from the effects of pixelisation, convolution and noise. The worldwide gravitational lensing community has made significant progress in techniques to measure these distortions via the Shear TEsting Program (STEP). Via STEP, we have run challenges within our own community, and come to recognise that this particular image analysis problem is ideally matched to experts in statistical inference, inverse problems and computational learning. Thus, in order to continue the progress seen in recent years, we are seeking an infusion of new ideas from these communities. This document details the GREAT08 Challenge for potential participants. Please visit www.great08challenge.info for the latest information.
|Title:||HANDBOOK FOR THE GREAT08 CHALLENGE: AN IMAGE ANALYSIS COMPETITION FOR COSMOLOGICAL LENSING|
|Keywords:||Inference, inverse problems, astronomy, WEAK GRAVITATIONAL SHEAR, LARGE-SCALE STRUCTURE, NONLINEAR CLUSTER INVERSION, GALAXY SHAPE MEASUREMENT, DARK-MATTER, SYSTEMATIC-ERRORS, POLAR SHAPELETS, COSMIC SHEAR, DISTORTIONS, CALIBRATION|
|UCL classification:||UCL > School of BEAMS > Faculty of Engineering Science > Computer Science|
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy
UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Space and Climate Physics
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