A direct measurement of tomographic lensing power spectra from CFHTLenS

Abstract

We measure the weak gravitational lensing shear power spectra and their cross-power in two photometric redshift bins from the Canada-France-Hawaii Telescope Lensing Survey (CFHTLenS). The measurements are performed directly in multipole space in terms of adjustable band powers. For the extraction of the band powers from the data we have implemented and extended a quadratic estimator, a maximum likelihood method that allows us to readily take into account irregular survey geometries, masks, and varying sampling densities. We find the 68 per cent credible intervals in the ${\sigma }_8$-${\Omega }_{\mathrm{m}}$-plane to be marginally consistent with results from $Planck$ for a simple five parameter $\Lambda$CDM model. For the projected parameter $S_8\equiv {\sigma }_8({\Omega }_{\mathrm{m}}/0.3{)}^{0.5}$ we obtain a best-fitting value of $S_8=0.768_{-0.039}^{+0.045}$. This constraint is consistent with results from other CFHTLenS studies as well as the Dark Energy Survey. Our most conservative model, including modifications to the power spectrum due to baryon feedback and marginalization over photometric redshift errors, yields an upper limit on the total mass of three degenerate massive neutrinos of $\Sigma m_{\nu }<4.53\mathrm{eV}$ at 95 per cent credibility, while a Bayesian model comparison does not favour any model extension beyond a simple five parameter $\Lambda$CDM model. Combining the shear likelihood with $Planck$ breaks the ${\sigma }_8$-${\Omega }_{\mathrm{m}}$-degeneracy and yields ${\sigma }_8=0.818\pm 0.013$ and ${\Omega }_{\mathrm{m}}=0.300\pm 0.011$ which is fully consistent with results from $Planck$ alone.

19 pages, 12 figures, 7 tables. Accepted for publication in MNRAS. Minor corrections and updates with respect to previous version

References in corpus (13)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Massive neutrinos and cosmology
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• Gravitational Lensing Analysis of the Kilo Degree Survey
• The first and second data releases of the Kilo-Degree Survey
• The DES Science Verification Weak Lensing Shear Catalogues
• Cosmology from Cosmic Shear with DES Science Verification Data
• Means of confusion: how pixel noise affects shear estimates for weak gravitational lensing
• Baryons, Neutrinos, Feedback and Weak Gravitational Lensing
• Cosmic Shear Measurements with DES Science Verification Data
• Constraints on the Alignment of Galaxies in Galaxy Clusters from $\sim$14,000 Spectroscopic Members
• Hierarchical Cosmic Shear Power Spectrum Inference
• Cross-correlation cosmic shear with the SDSS and VLA FIRST surveys

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