A measurement of the mean central optical depth of galaxy clusters via the pairwise kinematic Sunyaev-Zel'dovich effect with SPT-3G and DES

Abstract

We infer the mean optical depth of a sample of optically-selected galaxy clusters from the Dark Energy Survey (DES) via the pairwise kinematic Sunyaev-Zel'dovich (kSZ) effect. The pairwise kSZ signal between pairs of clusters drawn from the DES Year-3 cluster catalog is detected at $4.1\sigma$ in cosmic microwave background (CMB) temperature maps from two years of observations with the SPT-3G camera on the South Pole Telescope. After cuts, there are 24,580 clusters in the $\sim 1,400$ deg${}^2$ of the southern sky observed by both experiments. We infer the mean optical depth of the cluster sample with two techniques. The optical depth inferred from the pairwise kSZ signal is ${\bar{\tau }}_e=(2.97\pm 0.73)\times 10^{-3}$, while that inferred from the thermal SZ signal is ${\bar{\tau }}_e=(2.51\pm 0.55^{\text{stat}}\pm 0.15^{\mathrm{syst}})\times 10^{-3}$. The two measures agree at $0.6\sigma$. We perform a suite of systematic checks to test the robustness of the analysis.

References in corpus (57)

• SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
• Star Formation in Galaxies Along the Hubble Sequence
• The Baryon Oscillation Spectroscopic Survey of SDSS-III
• Large-Scale Structure of the Universe and Cosmological Perturbation Theory
• UniverseMachine: The Correlation between Galaxy Growth and Dark Matter Halo Assembly from z=0-10
• The Dark Energy Camera
• MultiDark simulations: the story of dark matter halo concentrations and density profiles
• Cosmology with the Sunyaev-Zel'dovich Effect
• Why your model parameter confidences might be too optimistic -- unbiased estimation of the inverse covariance matrix
• The Sunyaev-Zel'dovich Effect
• redMaPPer I: Algorithm and SDSS DR8 Catalog
• The 10 Meter South Pole Telescope
• The BAHAMAS project: Calibrated hydrodynamical simulations for large-scale structure cosmology
• Representations of celestial coordinates in FITS
• The Atacama Cosmology Telescope: A Catalog of > 4000 Sunyaev-Zel'dovich Galaxy Clusters
• Testing cosmological structure formation using redshift-space distortions
• The Atacama Cosmology Telescope: Temperature and Gravitational Lensing Power Spectrum Measurements from Three Seasons of Data
• Measurements of the E-Mode Polarization and Temperature-E-Mode Correlation of the CMB from SPT-3G 2018 Data
• The Atacama Cosmology Telescope: The Receiver and Instrumentation
• Evidence of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect
• Dark Energy Survey Year 1 Results: Weak Lensing Mass Calibration of redMaPPer Galaxy Clusters
• redMaGiC: Selecting Luminous Red Galaxies from the DES Science Verification Data
• Using the kinematic Sunyaev-Zeldovich effect to determine the peculiar velocities of clusters of galaxies
• Robust Optical Richness Estimation with Reduced Scatter
• The Atacama Cosmology Telescope: Combined kinematic and thermal Sunyaev-Zel'dovich measurements from BOSS CMASS and LOWZ halos
• The Kinematic Sunyaev-Zel'dovich Effect with Projected Fields: A Novel Probe of the Baryon Distribution with Planck, WMAP, and WISE Data
• Constraints on the Richness-Mass Relation and the Optical-SZE Positional Offset Distribution for SZE-Selected Clusters
• Detection of the kinematic Sunyaev-Zel'dovich effect with DES Year 1 and SPT
• An Improved Measurement of the Secondary Cosmic Microwave Background Anisotropies from the SPT-SZ + SPTpol Surveys
• Deconstructing the kinetic SZ Power Spectrum
• Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope
• The First Public Release of South Pole Telescope Data: Maps of a 95-square-degree Field from 2008 Observations
• Dark Energy Constraints from Galaxy Cluster Peculiar Velocities
• The Tau of Galaxy Clusters
• A hydrodynamical halo model for weak-lensing cross correlations
• Streaming velocities as a dynamical estimator of Omega
• Galaxy Clusters Selected via the Sunyaev-Zel'dovich Effect in the SPTpol 100-Square-Degree Survey
• Constraints on gravity and dark energy from the pairwise kinematic Sunyaev-Zeldovich effect
• On the streaming motions of haloes and galaxies
• Dynamics of pairwise motions
• CMB/kSZ and Compton-$y$ Maps from 2500 square degrees of SPT-SZ and Planck Survey Data
• A measurement of the secondary-CMB and millimeter-wave-foreground bispectrum using 800 square degrees of South Pole Telescope data
• The Atacama Cosmology Telescope: Detection of the Pairwise Kinematic Sunyaev-Zel'dovich Effect with SDSS DR15 Galaxies
• Optical selection bias and projection effects in stacked galaxy cluster weak lensing
• Simulations of the Pairwise Kinematic Sunyaev-Zel'dovich Signal
• Large scale motions in superclusters: their imprint in the CMB
• Prospects for measuring the relative velocities of galaxy clusters in photometric surveys using the kinetic Sunyaev-Zel'dovich Effect
• Spectroscopic Quantification of Projection Effects in the SDSS redMaPPer Galaxy Cluster Catalogue
• Exploring the contamination of the DES-Y1 Cluster Sample with SPT-SZ selected clusters
• Dark energy imprints on the kinematic Sunyaev-Zel'dovich signal
• The Atacama Cosmology Telescope: Probing the Baryon Content of SDSS DR15 Galaxies with the Thermal and Kinematic Sunyaev-Zel'dovich Effects
• Kinetic Sunyaev-Zeldovich effect in modified gravity
• Cosmology with the pairwise kinematic SZ effect: Calibration and validation using hydrodynamical simulations
• Detection of pairwise kSZ effect with DESI galaxy clusters and Planck
• Non-Gaussianity of secondary anisotropies from ACTPol and Planck
• Design and characterization of the SPT-3G receiver
• Introducing constrained matched filters for improved separation of point sources from galaxy clusters

Cited by in corpus (12)

• Cosmology From CMB Lensing and Delensed EE Power Spectra Using 2019-2020 SPT-3G Polarization Data
• First Constraints on the Epoch of Reionization Using the non-Gaussianity of the Kinematic Sunyaev-Zel{'}dovich Effect from the South Pole Telescope and {\it Herschel}-SPIRE Observations
• The Kinematic Sunyaev-Zel'dovich Effect with ACT, DES, and BOSS: a Novel Hybrid Estimator
• Pairwise kSZ signal extraction efficacy and optical depth estimation
• A new "temperature inversion" estimator to detect CMB patchy screening by large-scale structure
• kSZ Pairwise Velocity Reconstruction with Machine Learning
• The Atacama Cosmology Telescope: A Test of the Gravitational Force Law on Cosmological Scales Using the Kinematic Sunyaev-Zeldovich Effect
• Estimators for the cross-pairwise kSZ effect: forecasts for the dark energy and modified gravity parameters with Simons Observatory and CMB-S4
• Cluster optical depth and pairwise velocity estimation using machine learning
• The pairwise and cross-pairwise y-type polarised kinetic Sunyaev Zeldovich effect from transverse velocity of galaxy clusters
• On the capability of high redshift kSZ measurement with galaxy surveys
• Circumventing Cosmic Variance via Remote Quadrupole Measurements