Optimal filters for the moving lens effect
Selim C. Hotinli, Matthew C. Johnson, Joel Meyers
Abstract
We assess the prospects for detecting the moving lens effect using cosmological surveys. The bulk motion of cosmological structure induces a small-scale dipolar temperature anisotropy of the cosmic microwave radiation, centered around halos and oriented along the transverse velocity field. We introduce a set of optimal filters for this signal and forecast that a high significance detection can be made with upcoming experiments. We discuss the prospects for reconstructing the bulk transverse velocity field on large scales using matched filters, finding good agreement with previous work using quadratic estimators.
Topics & Concepts
Cosmic microwave backgroundPhysicsEstimatorTransverse planeLens (geology)AnisotropyDipoleComputational physicsCOSMIC cancer databaseOpticsScale (ratio)Field (mathematics)Cosmic background radiationStatistical physicsAstrophysicsMathematicsStatisticsQuantum mechanicsPure mathematicsEngineeringStructural engineeringGalaxies: Formation, Evolution, PhenomenaCosmology and Gravitation TheoriesRadio Astronomy Observations and Technology