Lensing convergence and the neutrino mass scale in galaxy redshift surveys

Abstract

We demonstrate the importance of including the lensing contribution in galaxy clustering analyses with large galaxy redshift surveys. It is well known that radial cross-correlations between different redshift bins of galaxy surveys are dominated by lensing. But we show here that also neglecting lensing in the autocorrelations within one bin severely biases cosmological parameter estimation with redshift surveys. It leads to significant shifts for several cosmological parameters, most notably the scalar spectral index and the neutrino mass scale. Especially the latter parameter is one of the main targets of future galaxy surveys.

Version accepted in PRD. We added both a MCMC analysis including Planck priors and a Fisher matrix analysis, discussed the significance of lensing detection, and included two appendices. Conclusions unchanged

References in corpus (5)

• New Perspective on Galaxy Clustering as a Cosmological Probe: General Relativistic Effects
• On model selection forecasting, Dark Energy and modified gravity
• Einstein's legacy in galaxy surveys
• Non-local gravity and comparison with observational datasets. II. Updated results and Bayesian model comparison with $\Lambda$CDM
• Cosmological Systematics Beyond Nuisance Parameters : Form Filling Functions

Cited by in corpus (38)

• The peculiar acceleration of stellar-origin black hole binaries: measurement and biases with LISA
• The full-sky relativistic correlation function and power spectrum of galaxy number counts: I. Theoretical aspects
• The impact of relativistic effects on cosmological parameter estimation
• Curvature constraints from Large Scale Structure
• Euclid preparation: XIX. Impact of magnification on photometric galaxy clustering
• Magnification and evolution biases in large-scale structure surveys
• On the importance of lensing for galaxy clustering in photometric and spectroscopic surveys
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Angular clustering tomography and its cosmological implications
• Beware of commonly used approximations I: errors in forecasts
• Relativistic wide-angle galaxy bispectrum on the light-cone
• Beware of commonly used approximations II: estimating systematic biases in the best-fit parameters
• The relativistic dipole and gravitational redshift on LSS
• Impact of next-to-leading order contributions to CMB lensing
• Non-linear contributions to angular power spectra
• Disentangling magnification in combined shear-clustering analyses
• Covariance of the galaxy angular power spectrum with the halo model
• Gravitational wave astronomy with radio galaxy surveys
• Lensing convergence in galaxy clustering in LambdaCDM and beyond
• On cosmological bias due to the magnification of shear and position samples in modern weak lensing analyses
• The relativistic galaxy number counts in the weak field approximation
• Multi-wavelength spectroscopic probes: biases from neglecting light-cone effects
• Measuring ISW with next-generation radio surveys
• Cosmological parameter forecasts by a joint 2D tomographic approach to CMB and galaxy clustering
• Generalisation of the Kaiser Rocket effect in general relativity in the wide-angle galaxy 2-point correlation function
• Intensity mapping of the 21cm emission: lensing
• General Relativistic corrections in density-shear correlations
• Momentum transfer in the dark sector and lensing convergence in upcoming galaxy surveys
• Lensing smoothing of BAO wiggles
• Developing a unified pipeline for large-scale structure data analysis with angular power spectra -- III. Implementing the multi-tracer technique to constrain neutrino masses
• The Alcock Paczynski test with Baryon Acoustic Oscillations: systematic effects for future surveys
• Unveiling the Universe with Emerging Cosmological Probes
• Lensing convergence and anisotropic dark energy in galaxy redshift surveys
• Cosmological Simulations of Number Counts
• Lensing contribution to the 21cm intensity bispectrum
• Multi-wavelength spectroscopic probes: prospects for primordial non-Gaussianity and relativistic effects
• The Kaiser-Rocket effect: three decades and counting
• Towards simulating a realistic data analysis with an optimised angular power spectrum of spectroscopic galaxy surveys
• Forecasting the potential of weak lensing magnification to enhance LSST large-scale structure analyses