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Calibration of weak-lensing shear in the Kilo-Degree Survey

Abstract:

We describe and test the pipeline used to measure the weak lensing shear signal from the Kilo Degree Survey (KiDS). It includes a novel method of `self-calibration' that partially corrects for the effect of noise bias. We also discuss the `weight bias' that may arise in optimally-weighted measurements, and present a scheme to mitigate that bias. To study the residual biases arising from both galaxy selection and shear measurement, and to derive an empirical correction to reduce the shear bias...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1093/mnras/stx200

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Department:
Oxford, MPLS, Physics, Astrophysics
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Author
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Department:
Oxford, MPLS, Physics, Astrophysics
Role:
Author
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Publisher:
Oxford University Press Publisher's website
Journal:
Monthly Notices of the Royal Astronomical Society Journal website
Volume:
467
Issue:
2
Pages:
1627-1651
Publication date:
2017-01-05
Acceptance date:
2017-01-20
DOI:
Pubs id:
pubs:656765
URN:
uri:de06b48c-8a6a-4bf4-80a1-a75d705ab69d
UUID:
uuid:de06b48c-8a6a-4bf4-80a1-a75d705ab69d
Local pid:
pubs:656765

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