The Moving Lens Effect: Simulations, Forecasts and Foreground Mitigation

Abstract

The peculiar motion of massive objects across the line of sight imprints a dipolar temperature anisotropy pattern on the cosmic microwave background known as the moving lens effect. This effect provides a unique probe of the transverse components of the peculiar velocity field, but has not yet been detected due to its small size. We implement and validate a stacking estimator for the moving lens signal using a galaxy catalog as a tracer of massive haloes combined with reconstructed velocities from the galaxy number density field. Using simulations, we forecast detection prospects for the moving lens signal from current and upcoming microwave background and galaxy surveys. We demonstrate a new foreground mitigation strategy likely sufficient for current data sets, and discuss various sources of systematic error and noise. Upcoming galaxy surveys will provide high significance statistical detections of the moving lens effect.

17 pages, 15 figures, accepted in PRD

References in corpus (37)

• A Universal Density Profile from Hierarchical Clustering
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological analysis of the DR12 galaxy sample
• The Simons Observatory: Science goals and forecasts
• Weak Gravitational Lensing of the CMB
• The Tenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Apache Point Observatory Galactic Evolution Experiment
• Advanced ACTPol Cryogenic Detector Arrays and Readout
• The Atacama Cosmology Telescope: The Receiver and Instrumentation
• Evidence of Galaxy Cluster Motions with the Kinematic Sunyaev-Zel'dovich Effect
• The Atacama Cosmology Telescope: The polarization-sensitive ACTPol instrument
• The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: cosmological implications of the configuration-space clustering wedges
• Optical Design of the Atacama Cosmology Telescope and the Millimeter Bolometric Array Camera
• The Atacama Cosmology Telescope: Combined kinematic and thermal Sunyaev-Zel'dovich measurements from BOSS CMASS and LOWZ halos
• Evidence for the kinematic Sunyaev-Zeľdovich effect with ACTPol and velocity reconstruction from BOSS
• Galaxies in X-ray Groups. II. A Weak Lensing Study of Halo Centering
• The Websky Extragalactic CMB Simulations
• Photometric Redshifts for Next-Generation Surveys
• A Measurement of the Kinetic Sunyaev-Zel'dovich Signal Toward MACS J0717.5+3745
• The mass-Peak Patch algorithm for fast generation of deep all-sky dark matter halo catalogues and its N-Body validation
• Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope
• Constraining local non-Gaussianities with kSZ tomography
• A Measurement of Gravitational Lensing of the Cosmic Microwave Background by Galaxy Clusters Using Data from the South Pole Telescope
• Secondary anisotropies of the CMB
• The LSST DESC DC2 Simulated Sky Survey
• Cluster Mass Estimators from CMB Temperature and Polarization Lensing
• Null Geodesics in Perturbed Spacetimes
• The Atacama Cosmology Telescope: Detection of the Pairwise Kinematic Sunyaev-Zel'dovich Effect with SDSS DR15 Galaxies
• DESI luminous red galaxy samples for cross-correlations
• Transverse Velocities with the Moving Lens Effect
• Cosmology with the moving lens effect
• Pairwise Transverse Velocity Measurement with the Rees-Sciama Effect
• A Detection of CMB-Cluster Lensing using Polarization Data from SPTpol
• Optimal filters for the moving lens effect
• Velocity reconstruction in the era of DESI and Rubin (part I): Exploring spectroscopic, photometric & hybrid samples
• Constraining the galaxy-halo connection of infrared-selected unWISE galaxies with galaxy clustering and galaxy-CMB lensing power spectra
• Measuring Dark Matter Flows in Merging Clusters of Galaxies
• A new "temperature inversion" estimator to detect CMB patchy screening by large-scale structure
• Transverse velocities and matter gradient correlations: a new signal and a new challenge to moving-lens analyses