Self-calibration of weak lensing systematic effects using combined two- and three-point statistics
arXiv:2010.00614 · doi:10.1093/mnras/stab413
Abstract
We investigate the prospects for using the weak lensing bispectrum alongside the power spectrum to control systematic uncertainties in a Euclid-like survey. Three systematic effects are considered: the intrinsic alignment of galaxies, uncertainties in the means of tomographic redshift distributions, and multiplicative bias in the measurement of the shear signal. We find that the bispectrum is very effective in mitigating these systematic errors. Varying all three systematics simultaneously, a joint power spectrum and bispectrum analysis reduces the area of credible regions for the cosmological parameters and by a factor of 90 and for the two parameters of a time-varying dark energy equation of state by a factor of almost 20, compared with the baseline approach of using the power spectrum alone and of imposing priors consistent with the accuracy requirements specified for Euclid. We also demonstrate that including the bispectrum self-calibrates all three systematic effects to the stringent levels required by the forthcoming generation of weak lensing surveys, thereby reducing the need for external calibration data.
Accepted for publication in MNRAS, 22 pages
References in corpus (107)
- A Universal Density Profile from Hierarchical Clustering
- Baryonic Features in the Matter Transfer Function
- Halo Models of Large Scale Structure
- The Cosmic Evolution Survey (COSMOS) -- Overview
- Large-Scale Structure of the Universe and Cosmological Perturbation Theory
- Toward a halo mass function for precision cosmology: the limits of universality
- An analytic model for the spatial clustering of dark matter haloes
- Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
- Revising the Halofit Model for the Nonlinear Matter Power Spectrum
- Karhunen-Loeve eigenvalue problems in cosmology: how should we tackle large data sets?
- Dark matter halo concentrations in the Wilkinson Microwave Anisotropy Probe year 5 cosmology
- KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
- KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
- CFHTLenS: The Canada-France-Hawaii Telescope Lensing Survey
- Dark Energy Survey Year 1 Results: Cosmological Constraints from Cosmic Shear
- Intrinsic alignment-lensing interference as a contaminant of cosmic shear
- Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data
- The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations
- Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
- Bayesian Galaxy Shape Measurement for Weak Lensing Surveys - III. Application to the Canada-France-Hawaii Telescope Lensing Survey
- Extended Limber Approximation
- A unified pseudo- framework
- Systematic Errors in Future Weak Lensing Surveys: Requirements and Prospects for Self-Calibration
- A new measure for cosmic shear
- Weak lensing for precision cosmology
- Cosmological parameters from lensing power spectrum and bispectrum tomography
- KiDS+VIKING-450: Cosmic shear tomography with optical+infrared data
- CFHTLenS: Combined probe cosmological model comparison using 2D weak gravitational lensing
- HMcode-2020: Improved modelling of non-linear cosmological power spectra with baryonic feedback
- Galaxy alignments: An overview
- Power Spectrum Super-Sample Covariance
- The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
- Effect of Photometric Redshift Uncertainties on Weak Lensing Tomography
- CFHTLenS revisited: assessing concordance with Planck including astrophysical systematics
- KiDS+GAMA: Cosmology constraints from a joint analysis of cosmic shear, galaxy-galaxy lensing and angular clustering
- Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample
- Dark Energy Survey Year 1 Results: Weak Lensing Shape Catalogues
- Origins of weak lensing systematics, and requirements on future instrumentation (or knowledge of instrumentation)
- Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies
- Intrinsic alignments of SDSS-III BOSS LOWZ sample galaxies
- Simultaneous measurement of cosmology and intrinsic alignments using joint cosmic shear and galaxy number density correlations
- Super-Sample Covariance in Simulations
- Power Spectrum Covariance of Weak Gravitational Lensing
- Calibrating the Nonlinear Matter Power Spectrum: Requirements for Future Weak Lensing Surveys
- The Impact of Non-Gaussian Errors on Weak Lensing Surveys
- CFHTLenS: Cosmological constraints from a combination of cosmic shear two-point and three-point correlations
- Galaxy alignments: Observations and impact on cosmology
- KiDS+VIKING-450 and DES-Y1 combined: Cosmology with cosmic shear
- KiDS-1000 catalogue: Weak gravitational lensing shear measurements
- On measuring the covariance matrix of the nonlinear power spectrum from simulations
- Means of confusion: how pixel noise affects shear estimates for weak gravitational lensing
- Effect of baryonic feedback on two- and three-point shear statistics: prospects for detection and improved modelling
- KiDS+VIKING-450 and DES-Y1 combined: Mitigating baryon feedback uncertainty with COSEBIs
- Bayesian Galaxy Shape Measurement for Weak Lensing Surveys -II. Application to Simulations
- Comprehensive Two-Point Analyses of Weak Gravitational Lensing Surveys
- Information content of weak lensing power spectrum and bispectrum: including the non-Gaussian error covariance matrix
- Probing dark energy with cluster counts and cosmic shear power spectra: including the full covariance
- Defining a weak lensing experiment in space
- Position-dependent power spectrum of the large-scale structure: a novel method to measure the squeezed-limit bispectrum
- Assessment of the Information Content of the Power Spectrum and Bispectrum
- On the assumption of Gaussianity for cosmological two-point statistics and parameter dependent covariance matrices
- Weak lensing from space: first cosmological constraints from three-point shear statistics
- Peak-Background Split, Renormalization, and Galaxy Clustering
- An improved fitting formula for the dark matter bispectrum
- The Cosmological Impact of Intrinsic Alignment Model Choice for Cosmic Shear
- Measurement and Calibration of Noise Bias in Weak Lensing Galaxy Shape Estimation
- Detection of dark matter Skewness in the VIRMOS-DESCART survey: Implications for Ω_0
- KiDS+GAMA: Intrinsic alignment model constraints for current and future weak lensing cosmology
- Dark Energy Survey Year 1 Results: Constraints on Intrinsic Alignments and their Colour Dependence from Galaxy Clustering and Weak Lensing
- The three-point correlation function of cosmic shear: I. The natural components
- Super-Sample Signal
- Systematic effects on dark energy from 3D weak shear
- Information content of the non-linear power spectrum: the effect of beat-coupling to large scales
- General Requirements on Matter Power Spectrum Predictions for Cosmology with Weak Lensing Tomography
- Shear Power Spectrum Reconstruction using Pseudo-Spectrum Method
- Intrinsic alignments of BOSS LOWZ galaxies II: Impact of shape measurement methods
- Complete super-sample lensing covariance in the response approach
- On the Probability Distributions of Ellipticity
- Constraining Neutrino Mass with the Tomographic Weak Lensing Bispectrum
- Dark Energy Survey Year 1 Results: Joint Analysis of Galaxy Clustering, Galaxy Lensing, and CMB Lensing Two-point Functions
- Fitting the nonlinear matter bispectrum by the Halofit approach
- Baryonic effects on the matter bispectrum
- Impact of the non-Gaussian covariance of the weak lensing power spectrum and bispectrum on cosmological parameter estimation
- Sources of contamination to weak lensing three-point statistics: constraints from N-body simulations
- Patterns in the weak shear 3-point correlation function
- Joint likelihood function of cluster counts and -point correlation functions: Improving their power through including halo sample variance
- Higher-order moments of the lensing shear and other spin two fields
- Bispectrum Supersample Covariance
- The Three-Point Correlation Function for Spin-2 Fields
- Bispectrum covariance in the flat-sky limit
- Euclid: The reduced shear approximation and magnification bias for Stage IV cosmic shear experiments
- Photo-z outlier self-calibration in weak lensing surveys
- The squeezed matter bispectrum covariance with responses
- Self-Calibration for 3-point Intrinsic Alignment Auto-Correlations in Weak Lensing Surveys
- Self-Calibration Technique for 3-point Intrinsic Alignment Correlations in Weak Lensing Surveys
- A fitting formula for the non-Gaussian contribution to the lensing power spectrum covariance
- Flat-Sky Pseudo-Cls Analysis for Weak Gravitational Lensing
- Covariance of the galaxy angular power spectrum with the halo model
- Higher Order Statistics for Three-dimensional Shear and Flexion
- The Weak Lensing Bispectrum Induced By Gravity
- The Integrated Bispectrum and Beyond
- Controlling intrinsic-shear alignment in three-point weak lensing statistics
- Post-Limber Weak Lensing Bispectrum, Reduced Shear Correction, and Magnification Bias Correction
- A theoretical estimate of intrinsic ellipticity bispectra induced by angular momenta alignments
- Estimating the Integrated Bispectrum from Weak Lensing Maps
- Constraining primordial and gravitational mode coupling with the position-dependent bispectrum of the large-scale structure
- How well do third-order aperture mass statistics separate E- and B-modes?
Cited by in corpus (26)
- Euclid. I. Overview of the Euclid mission
- COSMOPOWER: emulating cosmological power spectra for accelerated Bayesian inference from next-generation surveys
- Euclid Preparation. XXVIII. Forecasts for ten different higher-order weak lensing statistics
- Joint analysis of anisotropic power spectrum, bispectrum and trispectrum: application to N-body simulations
- Persistent homology in cosmic shear II: A tomographic analysis of DES-Y1
- Inferring the impact of feedback on the matter distribution using the Sunyaev Zel'dovich effect: Insights from CAMELS simulations and ACT+DES data
- KiDS-1000 cosmology: Combined second- and third-order shear statistics
- KiDS-1000 Cosmology: Constraints from density split statistics
- A roadmap to cosmological parameter analysis with third-order shear statistics I: Modelling and validation
- Modeling Intrinsic Galaxy Alignment in the MICE Simulation
- Cosmology from the integrated shear 3-point correlation function: simulated likelihood analyses with machine-learning emulators
- A roadmap to cosmological parameter analysis with third-order shear statistics III: Efficient estimation of third-order shear correlation functions and an application to the KiDS-1000 data
- UNIONS: The impact of systematic errors on weak-lensing peak counts
- A revised density split statistic model for general filters
- Three-point intrinsic alignments of dark matter halos in the IllustrisTNG simulation
- The integrated angular bispectrum of weak lensing
- A roadmap to cosmological parameter analysis with third-order shear statistics II: Analytic covariance estimate
- Third-order intrinsic alignment of SDSS BOSS LOWZ galaxies
- Impact of intrinsic alignments on clustering constraints of the growth rate
- What does a cosmological experiment really measure? Covariant posterior decomposition with normalizing flows
- A rising tide: Intrinsic alignments since the turn of the millennium
- Position-Dependent Correlation Function of Weak Lensing Convergence
- Reconstructing redshift distributions with photometric galaxy clustering
- A direct detection method of galaxy intrinsic ellipticity-gravitational shear correlation in non-linear regimes using self-calibration
- Towards an application of fourth-order shear statistics I. The information content of
- Dark Energy Survey Year 3 Results: Three-Point Shear Correlations and Mass Aperture Moments