M. Cropper
Defining a weak lensing experiment in space
Cropper, M.; Hoekstra, H.; Kitching, T.; Massey, R.; Amiaux, J.; Miller, L.; Mellier, Y.; Rhodes, J.; Rowe, B.; Pires, S.; Saxton, C.; Scaramella, R.
Authors
H. Hoekstra
T. Kitching
Prof Richard Massey r.j.massey@durham.ac.uk
Professor
J. Amiaux
L. Miller
Y. Mellier
J. Rhodes
B. Rowe
S. Pires
C. Saxton
R. Scaramella
Abstract
This paper describes the definition of a typical next-generation space-based weak gravitational lensing experiment. We first adopt a set of top-level science requirements from the literature, based on the scale and depth of the galaxy sample, and the avoidance of systematic effects in the measurements which would bias the derived shear values. We then identify and categorize the contributing factors to the systematic effects, combining them with the correct weighting, in such a way as to fit within the top-level requirements. We present techniques which permit the performance to be evaluated and explore the limits at which the contributing factors can be managed. Besides the modelling biases resulting from the use of weighted moments, the main contributing factors are the reconstruction of the instrument point spread function, which is derived from the stellar images on the image, and the correction of the charge transfer inefficiency in the CCD detectors caused by radiation damage.
Citation
Cropper, M., Hoekstra, H., Kitching, T., Massey, R., Amiaux, J., Miller, L., …Scaramella, R. (2013). Defining a weak lensing experiment in space. Monthly Notices of the Royal Astronomical Society, 431(4), 3103-3126. https://doi.org/10.1093/mnras/stt384
Journal Article Type | Article |
---|---|
Publication Date | Jun 1, 2013 |
Deposit Date | Jun 30, 2014 |
Publicly Available Date | Mar 29, 2024 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 431 |
Issue | 4 |
Pages | 3103-3126 |
DOI | https://doi.org/10.1093/mnras/stt384 |
Keywords | Gravitational lensing: weak, Methods: statistical, Space vehicles: instruments, Cosmological parameters, Cosmology: observations. |
Related Public URLs | http://arxiv.org/abs/1210.7691 |
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Copyright Statement
This article has been accepted for publication in Monthly notices of the Royal Astronomical Society © 2013 The Authors Published by Oxford University Press on behalf of Royal Astronomical Society. All rights reserved.
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