Journal
ASTROPHYSICAL JOURNAL
Volume 808, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/808/1/7
Keywords
cosmic background radiation; cosmology: observations; infrared: diffuse background; large-scale structure of universe
Categories
Funding
- U.S. National Science Foundation [AST-0408698, AST-0965625, PHY-0855887, PHY-1214379]
- Princeton University
- University of Pennsylvania
- Cornell University
- University of Michigan
- Canada Foundation for Innovation (CFI) award
- NSF [AST-13122380]
- Misrahi research fund
- Oxford ERC grant [259505]
- NASA [NNX13AE56G, NNX14AB58G]
- CONICYT [QUIMAL-120001, FONDECYT-1141113]
- Comision Nacional de Investigacion Cientifica y Tecnologica de Chile (CONICYT)
- Government of Ontario
- Ontario Research Fund-Research Excellence
- University of Toronto
- Wilkinson research fund
- Compute Canada
- Science and Technology Facilities Council [ST/K00106X/1] Funding Source: researchfish
- STFC [ST/K00106X/1] Funding Source: UKRI
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1311756, 1312380, 1440226] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [0965625] Funding Source: National Science Foundation
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We present a measurement of the gravitational lensing of the Cosmic Microwave Background (CMB) temperature and polarization fields obtained by cross-correlating the reconstructed convergence signal from the first season of Atacama Cosmology Telescope Polarimeter data at 146 GHz with Cosmic Infrared Background (CIB) fluctuations measured using the Planck satellite. Using an effective overlap area of 92.7 square degrees, we detect gravitational lensing of the CMB polarization by large-scale structure at a statistical significance of 4.5 sigma. Combining both CMB temperature and polarization data gives a lensing detection at 9.1 sigma significance. A B-mode polarization lensing signal is present with a significance of 3.2 sigma. We also present the first measurement of CMB lensing-CIB correlation at small scales corresponding to l > 2000. Null tests and systematic checks show that our results are not significantly biased by astrophysical or instrumental systematic effects, including Galactic dust. Fitting our measurements to the best-fit lensing-CIB cross-power spectrum measured in Planck data, scaled by an amplitude A, gives A = 1.02(-0.08)(+0.12)(stat.) +/- 0.06(syst.), consistent with the Planck results.
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