Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 6, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1475-7516/2017/06/031
Keywords
CMBR experiments; CMBR polarisation; cosmological parameters from CMBR
Funding
- U.S. National Science Foundation [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, NNX12AM32H, ATP NNX14AB57G]
- ERC [259505, 267117]
- STFC Rutherford Fellowship
- Labex ILP part of the Idex SUPER [ANR-10-LABX-63, ANR-11-IDEX-0004-02]
- DOE [DE-SC0011114]
- NSF [AST-1312991, AST-1312380]
- NASA Space Technology Research Fellowships
- CONICYT [FONDECYT-1141113, PIA Anillo ACT-1417, BASAL PFB-06 CATA]
- ALMA-CONICYT [31140004]
- Mishrahi Fund
- Wilkinson Fund
- ESRC [ES/N013956/1] Funding Source: UKRI
- STFC [ST/N000706/1] Funding Source: UKRI
- NASA [NNX12AM32H, 69674] Funding Source: Federal RePORTER
- Science and Technology Facilities Council [ST/N000706/1] Funding Source: researchfish
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1440226, 1312380] Funding Source: National Science Foundation
- Division Of Astronomical Sciences
- Direct For Mathematical & Physical Scien [1454881] Funding Source: National Science Foundation
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We present the temperature and polarization angular power spectra measured by the Atacama Cosmology Telescope Polarimeter (ACTPol). We analyze night-time data collected during 2013-14 using two detector arrays at 149 GHz, from 548 deg(2) of sky on the celestial equator. We use these spectra, and the spectra measured with the MBAC camera on ACT from 2008-10, in combination with Planck and WMAP data to estimate cosmological parameters from the temperature, polarization, and temperature-polarization cross-correlations. We find the new ACTPol data to be consistent with the ACDM model. The ACTPol temperature-polarization cross-spectrum now provides stronger constraints on multiple parameters than the ACTPol temperature spectrum, including the baryon density, the acoustic peak angular scale, and the derived Hubble constant. The new ACTPol data provide information on damping tail parameters. The joint uncertainty on the number of neutrino species and the primordial helium fraction is reduced by 20% when adding ACTPol to Planck temperature data alone.
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