Journal
PHYSICAL REVIEW D
Volume 104, Issue 8, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.104.083529
Keywords
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Funding
- Horizon Fellowship from Johns Hopkins University
- Imperial College London
- Perimeter Visiting Fellowship
- NSF [1818899]
- Simons Foundation
- Government of Canada through the Department of Innovation, Science and Industry Canada
- Province of Ontario through the Ministry of Colleges and Universities.TABLE II [CMB-S4]
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This paper demonstrates how the large-scale transverse-velocity field reconstructed from measurements of the moving-lens effect can be used to measure the cosmological parameter f sigma(8) with high precision.
Velocity fields can be reconstructed at cosmological scales from their influence on the correlation between the cosmic microwave background and large-scale structure. Effects that induce such correlations include the kinetic Sunyaev Zel'dovich (kSZ) effect and the moving-lens effect, both of which will be measured to high precision with upcoming cosmology experiments. Galaxy measurements also provide a window into measuring velocities from the effect of redshift-space distortions (RSDs). The information that can be accessed from the kSZ or RSDs, however, is limited by astrophysical uncertainties and systematic effects, which may significantly reduce our ability to constrain cosmological parameters such as f sigma(8). In this paper, we show how the large-scale transverse-velocity field, which can be reconstructed from measurements of the moving-lens effect, can be used to measure f sigma(8) to high precision.
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