Journal article
Measurement of the Cosmic Microwave Background Polarization Lensing Power Spectrum from Two Years of POLARBEAR Data
M Aguilar Faundez, K Arnold, C Baccigalupi, D Barron, D Beck, S Beckman, F Bianchini, J Carron, K Cheung, Y Chinone, H El Bouhargani, T Elleflot, J Errard, G Fabbian, C Feng, T Fujino, N Goeckner-Wald, T Hamada, M Hasegawa, M Hazumi Show all
The Astrophysical Journal | American Astronomical Society | Published : 2020
Abstract
We present a measurement of the gravitational lensing deflection power spectrum reconstructed with two seasons of cosmic microwave background polarization data from the POLARBEAR experiment. Observations were taken at 150 GHz from 2012 to 2014 and surveyed three patches of sky totaling 30 square degrees. We test the consistency of the lensing spectrum with a cold dark matter cosmology and reject the no-lensing hypothesis at a confidence of 10.9σ, including statistical and systematic uncertainties. We observe a value of A L = 1.33 ± 0.32 (statistical) ±0.02 (systematic) ±0.07 (foreground) using all polarization lensing estimators, which corresponds to a 24% accurate measurement of the lensing..
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Grants
Awarded by National Science Foundation
Awarded by HPCI system
Awarded by Office of Science of the U.S. Department of Energy
Awarded by MEXT KAKENHI
Awarded by JSPS KAKENHI
Awarded by RADIOFOREGROUNDS grant of the European Unions Horizon 2020 research and innovation programme (COMPET-05-2015)
Awarded by Australian Research Councils Future Fellowship
Awarded by U.S. Department of Energy, Office of Science, Office of High Energy Physics
Awarded by European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC grant
Awarded by UK STFC
Awarded by CONICYT UC Berkeley-Chile Seed grant (CLAS fund)
Awarded by Fondecyt
Funding Acknowledgements
The POLARBEAR project is funded by the National Science Foundation under grant Nos. AST-0618398 and AST-1212230. The James Ax Observatory operates in the Parque Astronomico Atacama in Northern Chile under the auspices of the Comision Nacional de Investigacion Cientifica y Tecnologica de Chile (CONICYT). This research used resources of the Central Computing System, owned and operated by the Computing Research Center at KEK, the HPCI system (Project ID: hp150132), the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231, and the Open Science Grid, which is supported by the National Science Foundation and the U.S. Department of Energy's Office of Science. In Japan, this work was supported by MEXT KAKENHI grant Nos. JP15H05891, 21111002, JSPS KAKENHI grant Nos. JP26220709, JP24111715, JP26800125, and JP18H05539. This work was supported by World Premier International Research Center Initiative (WPI), MEXT, Japan. This work was supported by the JSPS Core-to-Core program. In Italy, this work was supported by the RADIOFOREGROUNDS grant of the European Unions Horizon 2020 research and innovation programme (COMPET-05-2015, grant agreement No. 687312) as well as by the INDARK INFN Initiative and the COSMOS network of the Italian Space Agency (cosmosnet.it). The McGill authors acknowledge funding from the Natural Sciences and Engineering Research Council of Canada and the Canadian Institute for Advanced Research. Support from the Ax Center for Experimental Cosmology at UC San Diego is gratefully acknowledged. The Melbourne group acknowledges support from the University of Melbourne and an Australian Research Councils Future Fellowship (FT150100074). Work at LBNL is supported in part by the U.S. Department of Energy, Office of Science, Office of High Energy Physics, under contract No. DE-AC02-05CH11231. This work was supported by the Moore Foundation, the Templeton Foundation and the Simons Foundation.G.F. acknowledges the support of the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC grant Agreement No. [616170] and of the UK STFC grant ST/P000525/1. M.A. acknowledges support from CONICYT UC Berkeley-Chile Seed grant (CLAS fund) No. 77047, Fondecyt project 1130777 and 1171811, DFI postgraduate scholarship program, and DFI Postgraduate Competitive Fund for Support in the Attendance to Scientific Events. M.H. acknowledges the support from the JSPS KAKENHI grant Nos. JP26220709 and JP15H05891. J. C. acknowledges support from the European Research Council under the European Union's Seventh Framework Programme (FP/2007-2013)/ERC grant Agreement No. [616170] Y.C. acknowledges the support from the JSPS KAKENHI grant No. 18K13558 and 18H04347. A.K. acknowledges the support by JSPS Leading Initiative for Excellent Young Researchers (LEADER) and by the JSPS KAKENHI grant No. JP16K21744. B.D.S. acknowledges funding from the European Research Council (ERC) under the European Unions Horizon 2020 research and innovation programme and support from an STFC Ernest Rutherford Fellowship. O.T. acknowledges the support from the JSPS KAKENHI grant No. JP26105519.