Journal
PHYSICAL REVIEW D
Volume 95, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.123529
Keywords
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Funding
- U.S. National Science Foundation (NSF) [AST-1440226, AST-0965625, AST-0408698, PHY-1214379, PHY-0855887]
- Princeton University
- University of Pennsylvania
- Canada Foundation for Innovation (CFI)
- Comision Nacional de Investigacion Cientifica y Tecnologica de Chile (CONICYT)
- CFI under Compute Canada
- Government of Ontario
- Ontario Research Fund Research Excellence
- University of Toronto
- NASA [NNX13AE56G, NNX14AB58G]
- NSF [1513618, AST-1312380]
- CONICYT [ALMA-CONICYT 31140004, FONDECYT 1141113, Anillo ACT-1417]
- Mishrahi Fund
- Wilkinson Fund
- ESRC [ES/N013956/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/N000927/1] Funding Source: researchfish
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1440226, 1454881] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1513618, 1312380] Funding Source: National Science Foundation
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We report a measurement of the power spectrum of cosmic microwave background (CMB) lensing from two seasons of Atacama Cosmology Telescope polarimeter (ACTPol) CMB data. The CMB lensing power spectrum is extracted from both temperature and polarization data using quadratic estimators. We obtain results that are consistent with the expectation from the best-fit Planck.CDM model over a range of multipoles L = 80-2100, with an amplitude of lensing Alens = 1.06 +/- 0.15 (stat) +/- 0.06 (sys) relative to Planck. Our measurement of the CMB lensing power spectrum gives s sigma(g)Omega(0.25)(m) = 0.643 +/- 0.054; including baryon acoustic oscillation scale data, we constrain the amplitude of density fluctuations to be sigma(g) = 0.831 +/- 0.053. We also update constraints on the neutrino mass sum. We verify our lensing measurement with a number of null tests and systematic checks, finding no evidence of significant systematic errors. This measurement relies on a small fraction of the ACTPol data already taken; more precise lensing results can therefore be expected from the full ACTPol data set.
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