DES Y3 + KiDS-1000: Consistent cosmology combining cosmic shear surveys

Abstract

We present a joint cosmic shear analysis of the Dark Energy Survey (DES Y3) and the Kilo-Degree Survey (KiDS-1000) in a collaborative effort between the two survey teams. We find consistent cosmological parameter constraints between DES Y3 and KiDS-1000 which, when combined in a joint-survey analysis, constrain the parameter $S_8={\sigma }_8\sqrt{{\Omega }_{\mathrm{m}}/0.3}$ with a mean value of $0.790_{-0.014}^{+0.018}$. The mean marginal is lower than the maximum a posteriori estimate, $S_8=0.801$, owing to skewness in the marginal distribution and projection effects in the multi-dimensional parameter space. Our results are consistent with $S_8$ constraints from observations of the cosmic microwave background by Planck, with agreement at the $1.7\sigma$ level. We use a Hybrid analysis pipeline, defined from a mock survey study quantifying the impact of the different analysis choices originally adopted by each survey team. We review intrinsic alignment models, baryon feedback mitigation strategies, priors, samplers and models of the non-linear matter power spectrum.

40 pages, 21 figures, 15 tables, accepted Open Journal of Astrophysics. Download the chains from https://des.ncsa.illinois.edu/releases/y3a2/Y3key-joint-des-kids or create your own chains with CosmoSIS using https://github.com/joezuntz/cosmosis-standard-library/blob/main/examples/des-y3_and_kids-1000.ini Watch the core team discuss this analysis at https://cosmologytalks.com/2023/05/26/des-kids

References in corpus (56)

• Dark Energy Survey Year 3 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
• PolyChord: nested sampling for cosmology
• Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Data Calibration
• Extended Limber Approximation
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
• Intrinsic galaxy alignments from the 2SLAQ and SDSS surveys: luminosity and redshift scalings and implications for weak lensing surveys
• DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation
• Potential sources of contamination to weak lensing measurements: constraints from N-body simulations
• COSMOPOWER: emulating cosmological power spectra for accelerated Bayesian inference from next-generation surveys
• A non-linear solution to the $S_8$ tension?
• Image Analysis for Cosmology: Results from the GREAT10 Galaxy Challenge
• Cluster Cepheids with High Precision Gaia Parallaxes, Low Zeropoint Uncertainties, and Hubble Space Telescope Photometry
• PSF calibration requirements for dark energy from cosmic shear
• Means of confusion: how pixel noise affects shear estimates for weak gravitational lensing
• Metacalibration: Direct Self-Calibration of Biases in Shear Measurement
• Baryons, Neutrinos, Feedback and Weak Gravitational Lensing
• Consistent lensing and clustering in a low-$S_8$ Universe with BOSS, DES Year 3, HSC Year 1 and KiDS-1000
• Constraints on Cosmological Parameters from the 500 deg${}^2$ SPTpol Lensing Power Spectrum
• The growth of density perturbations in the last $\sim$10 billion years from tomographic large-scale structure data
• Joint constraints on cosmology and the impact of baryon feedback: combining KiDS-1000 lensing with the thermal Sunyaev-Zeldovich effect from Planck and ACT
• The three-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
• The MillenniumTNG Project: High-precision predictions for matter clustering and halo statistics
• Dark Energy Survey Year 3 results: cosmological constraints from the analysis of cosmic shear in harmonic space
• DES Y3 cosmic shear down to small scales: constraints on cosmology and baryons
• A Measurement of the Galaxy Group-Thermal Sunyaev-Zel'dovich Effect Cross-Correlation Function
• KiDS-1000: cosmic shear with enhanced redshift calibration
• Non-Gaussian estimates of tensions in cosmological parameters
• Statistical Inconsistencies in the KiDS-450 Dataset
• Constraining baryonic feedback and cosmology with weak-lensing, X-ray, and kinematic Sunyaev-Zeldovich observations
• The Dark Energy Survey Year 3 and eBOSS: constraining galaxy intrinsic alignments across luminosity and colour space
• Dark Energy Survey Year 3 Results: Exploiting small-scale information with lensing shear ratios
• KiDS & Euclid: Cosmological implications of a pseudo angular power spectrum analysis of KiDS-1000 cosmic shear tomography
• Dark Energy Survey Year 3 Results: Multi-Probe Modeling Strategy and Validation
• Constraining the Baryonic Feedback with Cosmic Shear Using the DES Year-3 Small-Scale Measurements
• Robust sampling for weak lensing and clustering analyses with the Dark Energy Survey
• Aemulus $\nu$: Precise Predictions for Matter and Biased Tracer Power Spectra in the Presence of Neutrinos
• Cosmology with 6 parameters in the Stage-IV era: efficient marginalisation over nuisance parameters
• KiDS-Legacy calibration: unifying shear and redshift calibration with the SKiLLS multi-band image simulations
• Dark Energy Survey internal consistency tests of the joint cosmological probes analysis with posterior predictive distributions
• The MillenniumTNG Project: Intrinsic alignments of galaxies and halos
• Dark Energy Survey Year 3 results: Marginalisation over redshift distribution uncertainties using ranking of discrete realisations
• Inferring the impact of feedback on the matter distribution using the Sunyaev Zel'dovich effect: Insights from CAMELS simulations and ACT+DES data
• Probing galaxy bias and intergalactic gas pressure with KiDS Galaxies-tSZ-CMB lensing cross-correlations
• Cross-correlation of DES Y3 lensing and ACT/$Planck$ thermal Sunyaev Zel'dovich Effect I: Measurements, systematics tests, and feedback model constraints
• Euclid: Modelling massive neutrinos in cosmology -- a code comparison
• Modeling Intrinsic Galaxy Alignment in the MICE Simulation
• A Unified Catalog-level Reanalysis of Stage-III Cosmic Shear Surveys
• Hyper Suprime-Cam Year 3 Results: Cosmology from Cosmic Shear Two-point Correlation Functions
• Redshift requirements for cosmic shear with intrinsic alignment
• Mapping gas around massive galaxies: cross-correlation of DES Y3 galaxies and Compton-$y$-maps from SPT and Planck
• Analytical marginalisation over photometric redshift uncertainties in cosmic shear analyses
• An empirical approach to model selection: weak lensing and intrinsic alignments
• A Systematic Study of Projection Biases in Weak Lensing Analysis
• E/B mode decomposition of HSC-Y1 cosmic shear using COSEBIs: cosmological constraints and comparison with other two-point statistics
• Pure-mode correlation functions for cosmic shear and application to KiDS-1000

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