A Unified Catalog-level Reanalysis of Stage-III Cosmic Shear Surveys

Abstract

Cosmological parameter constraints from recent galaxy imaging surveys are reaching $2-3\%$-level accuracy. The upcoming Legacy Survey of Space and Time (LSST) of the Vera C. Rubin Observatory will produce sub-percent level measurements of cosmological parameters, providing a milestone test of the $\Lambda$CDM model. To supply guidance to the upcoming LSST analysis, it is important to understand thoroughly the results from different recent galaxy imaging surveys and assess their consistencies. In this work we perform a unified catalog-level reanalysis of three cosmic shear datasets: the first year data from the Dark Energy Survey (DES-Y1), the 1,000 deg${}^2$ dataset from the Kilo-Degree Survey (KiDS-1000), and the first year data from the Hyper Suprime-Cam Subaru Strategic Program (HSC-Y1). We utilize a pipeline developed and rigorously tested by the LSST Dark Energy Science Collaboration to perform the reanalysis and assess the robustness of the results to analysis choices. We find the $S_8$ constraint to be robust to two different small-scale modeling approaches, and varying choices of cosmological priors. Our unified analysis allows the consistency of the surveys to be rigorously tested and we find the three surveys to be statistically consistent. Due to the partially overlapping footprint, we model the cross-covariance between KiDS-1000 and HSC-Y1 approximately when combining all three datasets, resulting in a $1.6-1.9\%$ constraint on $S_8$ given different assumptions on the cross-covariance.

arXiv comment27 pages, 18 figures, to be submitted to MNRAS

References in corpus (86)

• 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
• Stable clustering, the halo model and nonlinear cosmological power spectra
• Bayesian photometric redshift estimation
• Revising the Halofit Model for the Nonlinear Matter Power Spectrum
• The Hyper Suprime-Cam SSP Survey: Overview and Survey Design
• The Dark Energy Camera
• 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
• The physics driving the cosmic star formation history
• KiDS-1000 Cosmology: Cosmic shear constraints and comparison between two point statistics
• CFHTLenS: The Canada-France-Hawaii Telescope Lensing Survey
• Dark Energy Survey Year 1 Results: Cosmological Constraints from Cosmic Shear
• CFHTLenS tomographic weak lensing cosmological parameter constraints: Mitigating the impact of intrinsic galaxy alignments
• Detection of weak gravitational lensing distortions of distant galaxies by cosmic dark matter at large scales
• First Data Release of the Hyper Suprime-Cam Subaru Strategic Program
• Intrinsic alignment-lensing interference as a contaminant of cosmic shear
• Detection of Weak Gravitational Lensing by Large-scale Structure
• Cosmology from cosmic shear power spectra with Subaru Hyper Suprime-Cam first-year data
• CMB power spectrum parameter degeneracies in the era of precision cosmology
• The Shear TEsting Programme 1: Weak lensing analysis of simulated ground-based observations
• The Hyper Suprime-Cam Software Pipeline
• Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
• The effects of galaxy formation on the matter power spectrum: A challenge for precision cosmology
• 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
• Extended Limber Approximation
• Gravitational Lensing Analysis of the Kilo Degree Survey
• Systematic Errors in Future Weak Lensing Surveys: Requirements and Prospects for Self-Calibration
• Dark Energy Survey Year 3 Results: Cosmology from Cosmic Shear and Robustness to Modeling Uncertainty
• Massive Neutrinos and the Non-linear Matter Power Spectrum
• Photometric Redshifts for Hyper Suprime-Cam Subaru Strategic Program Data Release 1
• The fourth data release of the Kilo-Degree Survey: ugri imaging and nine-band optical-IR photometry over 1000 square degrees
• Cosmological Model Predictions for Weak Lensing: Linear and Nonlinear Regimes
• CosmoSIS: modular cosmological parameter estimation
• The first and second data releases of the Kilo-Degree Survey
• The Intrinsic Alignment of Galaxies and its Impact on Weak Gravitational Lensing in an Era of Precision Cosmology
• Cosmological constraints from cosmic shear two-point correlation functions with HSC survey first-year data
• Parsl: Pervasive Parallel Programming in Python
• CFHTLenS revisited: assessing concordance with Planck including astrophysical systematics
• Accurate halo-model matter power spectra with dark energy, massive neutrinos and modified gravitational forces
• Practical Weak Lensing Shear Measurement with Metacalibration
• The first-year shear catalog of the Subaru Hyper Suprime-Cam SSP Survey
• Constraints on intrinsic alignment contamination of weak lensing surveys using the MegaZ-LRG sample
• Concordance and Discordance in Cosmology
• Beyond linear galaxy alignments
• Dark Energy Survey Year 1 Results: Weak Lensing Shape Catalogues
• Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies
• Cosmology from Cosmic Shear with DES Science Verification Data
• KiDS+VIKING-450 and DES-Y1 combined: Cosmology with cosmic shear
• KiDS-1000 catalogue: Redshift distributions and their calibration
• KiDS-1000 catalogue: Weak gravitational lensing shear measurements
• Weak lensing shear calibration with simulations of the HSC survey
• Calibration of weak-lensing shear in the Kilo-Degree Survey
• KiDS+VIKING-450 and DES-Y1 combined: Mitigating baryon feedback uncertainty with COSEBIs
• KiDS-1000 Cosmology: constraints beyond flat $\Lambda$CDM
• KiDS-1000 Methodology: Modelling and inference for joint weak gravitational lensing and spectroscopic galaxy clustering analysis
• COSEBIs: Extracting the full E-/B-mode information from cosmic shear correlation functions
• Baryons, Neutrinos, Feedback and Weak Gravitational Lensing
• Cosmological Constraints from Multiple Probes in the Dark Energy Survey
• Cosmic Shear Measurements with DES Science Verification Data
• Cosmic Shear Results from the Deep Lens Survey - II: Full Cosmological Parameter Constraints from Tomography
• Survey geometry and the internal consistency of recent cosmic shear measurements
• anesthetic: nested sampling visualisation
• Towards emulating cosmic shear data: Revisiting the calibration of the shear measurements for the Kilo-Degree Survey
• Joint constraints on cosmology and the impact of baryon feedback: combining KiDS-1000 lensing with the thermal Sunyaev-Zeldovich effect from Planck and ACT
• Assessing tension metrics with Dark Energy Survey and Planck data
• An Implementation of Bayesian Lensing Shear Measurement
• Cosmological discordances: a new measure, marginalization effects, and application to geometry vs growth current data sets
• KiDS-1000: cosmic shear with enhanced redshift calibration
• Non-Gaussian estimates of tensions in cosmological parameters
• Cosmic shear power spectra in practice
• A Unified Analysis of Four Cosmic Shear Surveys
• Mock galaxy shape catalogs in the Subaru Hyper Suprime-Cam Survey
• Dark Energy Survey Year 3 Results: Exploiting small-scale information with lensing shear ratios
• Consistency of Planck, ACT and SPT constraints on magnetically assisted recombination and forecasts for future experiments
• Robust sampling for weak lensing and clustering analyses with the Dark Energy Survey
• A Bayesian interpretation of inconsistency measures in cosmology
• Revisiting CFHTLenS cosmic shear: Optimal E/B mode decomposition using COSEBIs and compressed COSEBIs
• Validating a minimal galaxy bias method for cosmological parameter inference using HSC-SDSS mock catalogs
• Atmospheric PSF Interpolation for Weak Lensing in Short Exposure Imaging Data
• Approximating photo-$z$ PDFs for large surveys
• Consistency of cosmic shear analyses in harmonic and real space
• E/B mode decomposition of HSC-Y1 cosmic shear using COSEBIs: cosmological constraints and comparison with other two-point statistics
• Combining cosmic shear data with correlated photo-$z$ uncertainties: constraints from DESY1 and HSC-DR1

Cited by in corpus (15)

• The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
• DES Y3 + KiDS-1000: Consistent cosmology combining cosmic shear surveys
• The Sigma-8 Tension is a Drag
• Cosmic shear with small scales: DES-Y3, KiDS-1000 and HSC-DR1
• The Atacama Cosmology Telescope DR6 and DESI: Structure formation over cosmic time with a measurement of the cross-correlation of CMB Lensing and Luminous Red Galaxies
• KiDS-Legacy: Consistency of cosmic shear measurements and joint cosmological constraints with external probes
• Cosmology from weak lensing peaks and minima with Subaru Hyper Suprime-Cam survey first-year data
• Unified and consistent structure growth measurements from joint ACT, SPT and \textit{Planck} CMB lensing
• The SRG/eROSITA All-Sky Survey : Constraints on the structure growth from cluster number counts
• A multitracer analysis for the eBOSS galaxy sample based on the effective field theory of large-scale structure
• Role of the Hubble Scale in the Weak Lensing vs. CMB Tension
• Status of the $S_8$ Tension: A 2026 Review of Probe Discrepancies
• The catalog-to-cosmology framework for weak lensing and galaxy clustering for LSST
• 6x2pt: Forecasting gains from joint weak lensing and galaxy clustering analyses with spectroscopic-photometric galaxy cross-correlations
• Dusty Clump Survival in Supernova Ejecta: Dust-Mediated Growth vs. Crushing by the Reverse Shock