KiDS-1000: cross-correlation with Planck cosmic microwave background lensing and intrinsic alignment removal with self-calibration

Abstract

Galaxy shear - cosmic microwave background (CMB) lensing convergence cross-correlations contain additional information on cosmology to auto-correlations. While being immune to certain systematic effects, they are affected by the galaxy intrinsic alignments (IA). This may be responsible for the reported low lensing amplitude of the galaxy shear $\times$ CMB convergence cross-correlations, compared to the standard Planck $\Lambda$CDM (cosmological constant and cold dark matter) cosmology prediction. In this work, we investigate how IA affects the Kilo-Degree Survey (KiDS) galaxy lensing shear - Planck CMB lensing convergence cross-correlation and compare it to previous treatments with or without IA taken into consideration. More specifically, we compare marginalization over IA parameters and the IA self-calibration (SC) method (with additional observables defined only from the source galaxies) and prove that SC can efficiently break the degeneracy between the CMB lensing amplitude $A_{\mathrm{lens}}$ and the IA amplitude $A_{\mathrm{IA}}$. We further investigate how different systematics affect the resulting $A_{\mathrm{IA}}$ and $A_{\mathrm{lens}}$, and validate our results with the MICE2 simulation. We find that by including the SC method to constrain IA, the information loss due to the degeneracy between CMB lensing and IA is strongly reduced. The best-fit values are $A_{\mathrm{lens}}=0.84_{-0.22}^{+0.22}$ and $A_{\mathrm{IA}}=0.60_{-1.03}^{+1.03}$, while different angular scale cuts can affect $A_{\mathrm{lens}}$ by $\sim 10\%$. We show that appropriate treatment of the boost factor, cosmic magnification, and photometric redshift modeling is important for obtaining the correct IA and cosmological results.

arXiv commentmatch version accepted by A&A

References in corpus (109)

• Astropy: A Community Python Package for Astronomy
• emcee: The MCMC Hammer
• The NumPy array: a structure for efficient numerical computation
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Efficient Computation of CMB anisotropies in closed FRW models
• Weak Gravitational Lensing
• Planck 2018 results. I. Overview and the cosmological legacy of Planck
• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• Bayesian photometric redshift estimation
• KiDS-450: Cosmological parameter constraints from tomographic weak gravitational lensing
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• 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
• Planck 2018 results. VIII. Gravitational lensing
• Intrinsic alignment-lensing interference as a contaminant of cosmic shear
• Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data
• Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
• Weak Gravitational Lensing by Large-Scale Structure
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Data Calibration
• Bayesian Galaxy Shape Measurement for Weak Lensing Surveys - III. Application to the Canada-France-Hawaii Telescope Lensing Survey
• Intrinsic and Extrinsic Galaxy Alignment
• CFHTLenS: The Canada-France-Hawaii Telescope Lensing Survey - Imaging Data and Catalogue Products
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
• Weak lensing for precision cosmology
• KiDS+VIKING-450: Cosmic shear tomography with optical+infrared data
• The Skewness of the Aperture Mass Statistic
• The fourth data release of the Kilo-Degree Survey: ugri imaging and nine-band optical-IR photometry over 1000 square degrees
• Systematic errors in weak lensing: application to SDSS galaxy-galaxy weak lensing
• Spin induced galaxy alignments and their implications for weak lensing measurements
• Core Cosmology Library: Precision Cosmological Predictions for LSST
• The first and second data releases of the Kilo-Degree Survey
• Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data
• Detection of large scale intrinsic ellipticity-density correlation from the Sloan Digital Sky Survey and implications for weak lensing surveys
• CMB lensing from Planck PR4 maps
• Weak lensing surveys and the intrinsic correlation of galaxy ellipticities
• Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample
• Measurement of intrinsic alignments in galaxy ellipticities
• Beyond linear galaxy alignments
• The MICE Grand Challenge Lightcone Simulation III: Galaxy lensing mocks from all-sky lensing maps
• The MICE Grand Challenge Lightcone Simulation II: Halo and Galaxy catalogues
• Galaxy alignments: Observations and impact on cosmology
• Intrinsic Ellipticity Correlation of SDSS Luminous Red Galaxies and Misalignment with their Host Dark Matter Halos
• An algorithm to build mock galaxy catalogues using MICE simulations
• KiDS-1000 catalogue: Redshift distributions and their calibration
• Galaxy alignments: Theory, modelling and simulations
• Intrinsic correlation of halo ellipticity and its implications for large-scale weak lensing surveys
• KiDS-1000 catalogue: Weak gravitational lensing shear measurements
• Weak lensing with COMBO-17: estimation and removal of intrinsic alignments
• Tidal alignment of galaxies
• The impact of intrinsic alignment on current and future cosmic shear surveys
• KiDS-1000 Methodology: Modelling and inference for joint weak gravitational lensing and spectroscopic galaxy clustering analysis
• Galaxy-galaxy lensing estimators and their covariance properties
• The Atacama Cosmology Telescope: A CMB lensing mass map over 2100 square degrees of sky and its cross-correlation with BOSS-CMASS galaxies
• The halo model as a versatile tool to predict intrinsic alignments
• Photometric Redshifts for Next-Generation Surveys
• Survey geometry and the internal consistency of recent cosmic shear measurements
• Beyond Limber: Efficient computation of angular power spectra for galaxy clustering and weak lensing
• 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
• Intrinsic galaxy shapes and alignments II: Modelling the intrinsic alignment contamination of weak lensing surveys
• Looking through the same lens: shear calibration for LSST, Euclid & WFIRST with stage 4 CMB lensing
• First Measurement of the Cross-Correlation of CMB Lensing and Galaxy Lensing
• Cosmological discordances II: Hubble constant, Planck and large-scale-structure data sets
• Cross-correlating Planck CMB lensing with SDSS: Lensing-lensing and galaxy-lensing cross-correlations
• Galaxy-halo alignments in the Horizon-AGN cosmological hydrodynamical simulation
• A 2500 square-degree CMB lensing map from combined South Pole Telescope and Planck data
• On the complementarity of galaxy clustering with cosmic shear and flux magnification
• Intrinsic alignments of BOSS LOWZ galaxies II: Impact of shape measurement methods
• Cross-correlation of Planck CMB Lensing and CFHTLenS Galaxy Weak Lensing Maps
• KiDS-1000: cosmic shear with enhanced redshift calibration
• Testing KiDS cross-correlation redshifts with simulations
• Source-lens clustering effects on the skewness of the lensing convergence
• Cross-correlation of gravitational lensing from DES Science Verification data with SPT and Planck lensing
• Redshift and luminosity evolution of the intrinsic alignments of galaxies in Horizon-AGN
• A Unified Analysis of Four Cosmic Shear Surveys
• Improving Galaxy Clustering Measurements with Deep Learning: analysis of the DECaLS DR7 data
• Advances in Constraining Intrinsic Alignment Models with Hydrodynamic Simulations
• A natural boundary of dark matter haloes revealed around the minimum bias and maximum infall locations
• Cross-correlation between cosmic microwave background lensing and galaxy intrinsic alignment as a contaminant to gravitational lensing cross-correlated probes of the universe
• Strong detection of the CMB lensingxgalaxy weak lensingcross-correlation from ACT-DR4,PlanckLegacy and KiDS-1000
• Self calibration of gravitational shear-galaxy intrinsic ellipticity correlation in weak lensing surveys
• Redshift inference from the combination of galaxy colors and clustering in a hierarchical Bayesian model $-$ Application to realistic $N$-body simulations
• Unveiling the Intrinsic Alignment of Galaxies with Self-Calibration and DECaLS DR3 data
• CFHTLenS and RCSLenS Cross-Correlation with Planck Lensing Detected in Fourier and Configuration Space
• KiDS-450: Tomographic Cross-Correlation of Galaxy Shear with {\it Planck} Lensing
• Dark Energy Survey Year 1 Results: Cross-correlation between DES Y1 galaxy weak lensing and SPT+Planck CMB weak lensing
• Self-Calibration Technique for 3-point Intrinsic Alignment Correlations in Weak Lensing Surveys
• Power Spectrum of Intrinsic Alignments of Galaxies in IllustrisTNG
• Halo intrinsic alignment: dependence on mass, formation time and environment
• Contamination of early-type galaxy alignments to galaxy lensing-CMB lensing cross-correlation
• Cross-correlation between Subaru Hyper Suprime-Cam Galaxy Weak Lensing and Planck Cosmic Microwave Background Lensing
• Evidence for the Cross-correlation between Cosmic Microwave Background Polarization Lensing from POLARBEAR and Cosmic Shear from Subaru Hyper Suprime-Cam
• Organised Randoms: Learning and correcting for systematic galaxy clustering patterns in KiDS using self-organising maps
• Modeling Intrinsic Galaxy Alignment in the MICE Simulation
• Effects of Self-Calibration of Intrinsic Alignment on Cosmological Parameter Constraints from Future Cosmic Shear Surveys
• A proposal on the galaxy intrinsic alignment self-calibration in weak lensing surveys
• Cross-correlation of Planck CMB lensing with DESI galaxy groups
• First Evidence of Intrinsic Alignments of Red Galaxies at $z>1$: Cross-correlation between CFHTLenS and FastSound Samples
• Using angular two-point correlations to self-calibrate the photometric redshift distributions of DECaLS DR9
• Self-calibrating the gravitational shear-intrinsic ellipticity-intrinsic ellipticity (GII) cross-correlation
• Towards a Bias-Free Selection Function in Shear Measurement
• Detection of Cosmic Magnification via Galaxy Shear -- Galaxy Number Density Correlation from HSC Survey Data
• Radial alignment of elliptical galaxies by the tidal force of a cluster of galaxies
• Detection of cross-correlation between CMB Lensing and low-density points
• Weak lensing power spectrum reconstruction by counting galaxies.-- I: the ABS method
• Separating the Intrinsic Alignment Signal and the Lensing Signal using Self-Calibration in Photo-z Surveys with KiDS450 and KV450 Data
• Self-calibration method for II and GI types of intrinsic alignments of galaxies
• The source-lens clustering effect in the context of lensing tomography and its self-calibration
• First detection of the GI-type of intrinsic alignments of galaxies using the self-calibration method in a photometric galaxy survey

Cited by in corpus (10)

• DESI Legacy Imaging Surveys Data Release 9: Cosmological Constraints from Galaxy Clustering and Weak Lensing using the Minimal Bias Model
• Cosmology from Cross-Correlation of ACT-DR4 CMB Lensing and DES-Y3 Cosmic Shear
• LiteBIRD Science Goals and Forecasts: A full-sky measurement of gravitational lensing of the CMB
• A rising tide: Intrinsic alignments since the turn of the millennium
• Accurate Kappa Reconstruction Algorithm for masked shear catalog (AKRA)
• Cosmological Constraints with Void Lensing I: the Simulation-Based Inference Framework
• KiDS-Legacy: Constraining dark energy, neutrino mass, and curvature
• A direct detection method of galaxy intrinsic ellipticity-gravitational shear correlation in non-linear regimes using self-calibration
• Refitting cosmological data with neutrino mass and degeneracy
• Using two point correlation functions to understand the assembly histories of Milky Way-like galaxies