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Image Analysis for Cosmology: Shape Measurement Challenge Review & Results from the Mapping Dark Matter Challenge

Kitching, T.D.; Rhodes, J.; Heymans, C.; Massey, R.; Liu, Q.; Cobzarenco, M.; Cragin, B.L.; Hassaine, A.; Kirkby, D.; Lok, E.J.; Margala, D.; Moser, J.; O'Leary, M.; Pires, A.M.; Yurgenson, S.

Authors

T.D. Kitching

J. Rhodes

C. Heymans

Q. Liu

M. Cobzarenco

B.L. Cragin

A. Hassaine

D. Kirkby

E.J. Lok

D. Margala

J. Moser

M. O'Leary

A.M. Pires

S. Yurgenson



Abstract

In this paper we present results from the Mapping Dark Matter competition that expressed the weak lensing shape measurement task in its simplest form and as a result attracted over 700 submissions in 2 months and a factor of 3 improvement in shape measurement accuracy on high signal to noise galaxies, over previously published results, and a factor 10 improvement over methods tested on constant shear blind simulations. We also review weak lensing shape measurement challenges, including the Shear TEsting Programmes (STEP1 and STEP2) and the GRavitational lEnsing Accuracy Testing competitions (GREAT08 and GREAT10).

Citation

Kitching, T., Rhodes, J., Heymans, C., Massey, R., Liu, Q., Cobzarenco, M., …Yurgenson, S. (2015). Image Analysis for Cosmology: Shape Measurement Challenge Review & Results from the Mapping Dark Matter Challenge. Astronomy and computing, 10, 9-21. https://doi.org/10.1016/j.ascom.2014.12.004

Journal Article Type Article
Acceptance Date Dec 10, 2014
Online Publication Date Dec 18, 2014
Publication Date Apr 1, 2015
Deposit Date Mar 21, 2013
Publicly Available Date Apr 28, 2015
Journal Astronomy and computing
Print ISSN 2213-1337
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 10
Pages 9-21
DOI https://doi.org/10.1016/j.ascom.2014.12.004
Keywords Cosmology, Image analysis, Gravitational lensing, Dark energy, Dark matter

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