@misc{10481/62657,
year = {2014},
month = {10},
url = {http://hdl.handle.net/10481/62657},
abstract = {On the arcminute angular scales probed by Planck, the cosmic microwave background (CMB) anisotropies are gently perturbed by gravitational lensing. Here we present a detailed study of this effect, detecting lensing independently in the 100, 143, and 217 GHz frequency bands with an overall significance of greater than 25σ. We use thetemperature-gradient correlations induced by lensing to reconstruct a (noisy) map of the CMB lensing potential, which provides an integrated measure of the mass distribution back to the CMB last-scattering surface. Our lensing potential map is significantly correlated with other tracers of mass, a fact which we demonstrate using several representative tracers of large-scale structure. We estimate the power spectrum of the lensing potential, finding generally good agreement with expectations from the best-fitting ΛCDM model for the Planck temperature power spectrum, showing that this measurement at z = 1100 correctly predicts the properties of the lower-redshift, later-time structures which source the lensing potential. When combined with the temperature power spectrum, our measurement provides degeneracy-breaking power for parameter constraints; it improves CMB-alone constraints on curvature by a factor of two and also partly breaks the degeneracy between the amplitude of the primordial perturbation power spectrum and the optical depth to reionization, allowing a measurement of the optical depth to reionization which is independent of large-scale polarization data. Discarding scale information, our measurement corresponds to a 4% constraint on the amplitude of the lensing potential power spectrum, or a 2% constraint on the root-mean-squared amplitude of matter fluctuations at z ~ 2.},
organization = {European Space Agency},
organization = {Centre National D'etudes Spatiales},
organization = {CNRS/INSU-IN2P3-INP (France)},
organization = {Italian Space Agency (ASI)},
organization = {Istituto Nazionale Astrofisica (INAF)},
organization = {Italian National Research Council},
organization = {National Aeronautics & Space Administration (NASA)},
organization = {United States Department of Energy (DOE)},
organization = {UKSA (UK)},
organization = {Consejo Superior de Investigaciones Cientificas (CSIC)},
organization = {Spanish Government},
organization = {JA (Spain)},
organization = {RES (Spain)},
organization = {Finnish Funding Agency for Technology & Innovation (TEKES)},
organization = {AoF (Finland)},
organization = {CSC (Finland)},
organization = {Helmholtz Association},
organization = {German Aerospace Centre (DLR)},
organization = {Max Planck Society},
organization = {CSA (Canada)},
organization = {DTU Space (Denmark)},
organization = {SER/SSO (Switzerland)},
organization = {RCN (Norway)},
organization = {Science Foundation Ireland},
organization = {Portuguese Foundation for Science and Technology},
organization = {European Union (EU)},
organization = {United States Department of Energy (DOE)
	
DE-AC02-05CH11231},
organization = {IN2P3 Computer Center},
organization = {Science & Technology Facilities Council (STFC)
	
ST/I000976/1


	
ST/K003674/1
ST/H001239/1
ST/J000388/1
ST/M007685/1
ST/K00106X/1
ST/K000985/1
ST/K001051/1
ST/I005765/1
ST/L001314/1
ST/K004131/1
ST/K002805/1
ST/K00333X/1
ST/H008586/1
ST/J004812/1
ST/G003874/1
ST/K002899/1
ST/J005673/1
ST/I002006/1
ST/L000768/1
ST/J001368/1},
publisher = {EDP Sciences},
keywords = {Gravitational lensing: weak},
keywords = {Methods: data analysis},
keywords = {Cosmic background radiation},
keywords = {Large-scale structure of Universe},
title = {Planck 2013 results. XVII. Gravitational lensing by large-scale structure},
doi = {10.1051/0004-6361/201321543},
author = {Ade, P. A. R. and Battaner López, Eduardo and Planck Collaboration},
}