CMB-Cluster Lensing

Abstract

Clusters of galaxies are powerful cosmological probes, particularly if their masses can be determined. One possibility for mass determination is to study the cosmic microwave background (CMB) on small angular scales and observe deviations from a pure gradient due to lensing of massive clusters. I show that, neglecting contamination, this technique has the power to determine cluster masses very accurately, in agreement with estimates by Seljak and Zaldarriaga (1999). However, the intrinsic small scale structure of the CMB significantly degrades this power. The resulting mass constraints are useless unless one imposes a prior on the concentration parameter c. With even a modest prior on c, an ambitious CMB experiment (0.5' resolution and 1 microK per pixel) could determine masses of high redshift (z>0.5) clusters with ~ 30% accuracy.

17 pages, 10 figures

References in corpus (3)

• The Atacama Cosmology Telescope
• Cluster Masses Accounting for Structure along the Line of Sight
• Studying clusters with Planck

Cited by in corpus (30)

• Weak Gravitational Lensing of the CMB
• SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope
• Evidence of Lensing of the Cosmic Microwave Background by Dark Matter Halos
• Secondary anisotropies of the CMB
• Cross-correlation of CMB with large-scale structure: weak gravitational lensing
• The Atacama Cosmology Telescope Project: A Progress Report
• Cluster Mass Estimators from CMB Temperature and Polarization Lensing
• Fundamental Physics from Future Weak-Lensing Calibrated Sunyaev-Zel'dovich Galaxy Cluster Counts
• Mapping dark matter with cosmic magnification
• A Measurement of CMB Cluster Lensing with SPT and DES Year 1 Data
• Gravitational Lensing of the Microwave Background by Galaxy Clusters
• CMB Lensing and the WMAP Cold Spot
• Mass Calibration of Optically Selected DES clusters using a Measurement of CMB-Cluster Lensing with SPTpol Data
• Cluster Masses from CMB and Galaxy Weak Lensing
• Measuring galaxy cluster masses with CMB lensing using a Maximum Likelihood estimator: Statistical and systematic error budgets for future experiments
• Reconstructing Small Scale Lenses from the Cosmic Microwave Background Temperature Fluctuations
• Improved estimation of cluster mass profiles from the cosmic microwave background
• A Detection of CMB-Cluster Lensing using Polarization Data from SPTpol
• CMB lensing reconstruction biases from masking extragalactic sources
• Mass Estimation of Galaxy Clusters with Deep Learning II: CMB Cluster Lensing
• Imprints of gravitational lensing in the Planck CMB data at the location of WISExSCOS galaxies
• Improving cosmological constraints from galaxy cluster number counts with CMB-cluster-lensing data: Results from the SPT-SZ survey and forecasts for the future
• An Inpainting Approach to Tackle the Kinematic and Thermal SZ Induced Biases in CMB-Cluster Lensing Estimators
• Real space lensing reconstruction using cosmic microwave background polarization
• Prospects for Determining the Mass Distributions of Galaxy Clusters on Large Scales Using Weak Gravitational Lensing
• Planck intermediate results. LIII. Detection of velocity dispersion from the kinetic Sunyaev-Zeldovich effect
• Observational determination of the galaxy bias from cosmic variance with a random pointing survey: Clustering of z~2 galaxies from Hubble's BoRG survey
• Suppressing the thermal SZ-induced variance in CMB-cluster lensing estimators
• A measurement of cluster masses using Planck and SPT-SZ CMB lensing
• Prospects for studying the mass and gas in protoclusters with future CMB observations