3D Cosmic Shear: Cosmology from CFHTLenS

This paper presents the first application of 3D cosmic shear to a wide-field weak lensing survey. 3D cosmic shear is a technique that analyses weak lensing in three dimensions using a spherical harmonic approach, and does not bin data in the redshift direction. This is applied to CFHTLenS, a 154 squ...

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Bibliographic Details
Published in:arXiv.org 2015-01
Main Authors: Kitching, T D, Heavens, A F, Alsing, J, Erben, T, Heymans, C, Hildebrandt, H, Hoekstra, H, Jaffe, A, Kiessling, A, Mellier, Y, Miller, L, L van Waerbeke, Benjamin, J, Coupon, J, L Fu, Hudson, M J, Kilbinger, M, Kuijken, K, Rowe, B T P, Schrabback, T, Semboloni, E, Velander, M
Format: Article
Language:English
Subjects:
Cosmology
Dark energy
Equations of state
Galaxies
Masks
Nonlinear analysis
Power spectra
Red shift
Shear
Spherical harmonics
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Summary:This paper presents the first application of 3D cosmic shear to a wide-field weak lensing survey. 3D cosmic shear is a technique that analyses weak lensing in three dimensions using a spherical harmonic approach, and does not bin data in the redshift direction. This is applied to CFHTLenS, a 154 square degree imaging survey with a median redshift of 0.7 and an effective number density of 11 galaxies per square arcminute usable for weak lensing. To account for survey masks we apply a 3D pseudo-Cl approach on weak lensing data, and to avoid uncertainties in the highly non-linear regime, we separately analyse radial wave numbers k
ISSN:2331-8422
DOI:10.48550/arxiv.1401.6842