Journal
PHYSICAL REVIEW D
Volume 103, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.103.043536
Keywords
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Funding
- Perimeter Institute Graduate Fellowship
- Imperial College President's Scholarship
- National Science and Engineering Research Council
- U.S. Department of Energy [DE-SC0010129]
- Perimeter Institute for Theoretical Physics
- Government of Canada through the Department of Innovation, Science and Economic Development Canada
- Province of Ontario through the Ministry of Research, Innovation and Science
- U.S. Department of Energy (DOE) [DE-SC0010129] Funding Source: U.S. Department of Energy (DOE)
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The study assesses the potential for detecting the moving lens effect through cosmological surveys, introducing optimal filters for this signal and forecasting a high significance detection with upcoming experiments. It also discusses the prospects for reconstructing the bulk transverse velocity field on large scales using matched filters, showing good agreement with previous work using quadratic estimators.
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.
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