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Bayesian Galaxy Shape Measurement for Weak Lensing Surveys -II. Application to Simulations

Abstract:

We extend the Bayesian model fitting shape measurement method presented in Miller et al. (2007) and use the method to estimate the shear from the Shear TEsting Programme simulations (STEP). The method uses a fast model fitting algorithm which uses realistic galaxy profiles and analytically marginalises over the position and amplitude of the model by doing the model fitting in Fourier space. This is used to find the full posterior probability in ellipticity so that the shear can be estimated i...

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Publication status:
Published

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Authors


Kitching, TD More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Heymans, CE More by this author
Waerbeke, LV More by this author
Heavens, AF More by this author
Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
390
Issue:
1
Pages:
149-167
Publication date:
2008-02-12
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:ea4af5fa-3513-4d9a-9098-a1ef31a2ceac
Source identifiers:
19170
Local pid:
pubs:19170
Language:
English
Keywords:

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