@misc{10481/62565,
year = {2015},
month = {3},
url = {http://hdl.handle.net/10481/62565},
abstract = {We report the results of a joint analysis of data from BICEP2/Keck Array and Planck. BICEP2 and Keck Array have observed the same approximately 400  deg2 patch of sky centered on RA 0 h, Dec. −57.5°. The combined maps reach a depth of 57 nK deg in Stokes Q and U in a band centered at 150 GHz. Planck has observed the full sky in polarization at seven frequencies from 30 to 353 GHz, but much less deeply in any given region (1.2  μK deg in Q and U at 143 GHz). We detect 150×353 cross-correlation in B modes at high significance. We fit the single- and cross-frequency power spectra at frequencies ≥150  GHz to a lensed-ΛCDM model that includes dust and a possible contribution from inflationary gravitational waves (as parametrized by the tensor-to-scalar ratio r), using a prior on the frequency spectral behavior of polarized dust emission from previous Planck analysis of other regions of the sky. We find strong evidence for dust and no statistically significant evidence for tensor modes. We probe various model variations and extensions, including adding a synchrotron component in combination with lower frequency data, and find that these make little difference to the r constraint. Finally, we present an alternative analysis which is similar to a map-based cleaning of the dust contribution, and show that this gives similar constraints. The final result is expressed as a likelihood curve for r, and yields an upper limit r0.05<0.12 at 95% confidence. Marginalizing over dust and r, lensing B modes are detected at 7.0σ significance.},
organization = {National Science Foundation (NSF)
	
ANT-0742818
ANT-1044978
ANT-0742592
ANT-1110087},
organization = {JPL Research and Technology Development Fund from the NASA 	
06-ARPA206-0040
10-SAT10-0017},
organization = {National Science Foundation (NSF)
	
ANT-1145172
ANT-1145143
ANT-1145248},
organization = {Keck Foundation (Caltech)},
organization = {European Space Agency},
organization = {Centre National D'etudes Spatiales},
organization = {CNRS/INSU-IN2P3-INP (France)},
organization = {Italian Space Agency (ASI)},
organization = {Italian National Research Council},
organization = {Istituto Nazionale Astrofisica (INAF)},
organization = {National Aeronautics & Space Administration (NASA)},
organization = {United States Department of Energy (DOE)},
organization = {Science & Technology Facilities Council (STFC)},
organization = {UKSA (UK)},
organization = {Consejo Superior de Investigaciones Cientificas (CSIC)},
organization = {MINECO (Spain)},
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 = {ERC (EU)},
organization = {European Union (EU)},
organization = {Science & Technology Facilities Council (STFC)
	
ST/K00106X/1
ST/K001051/1
ST/K002805/1
ST/L000768/1
ST/K004131/1
ST/N001206/1
ST/K000985/1
ST/L000636/1
ST/K003674/1
ST/M007685/1
ST/L000393/1
ST/L000652/1},
organization = {Villum Fonden 	
10056},
publisher = {American Physical Society},
title = {Joint Analysis of BICEP2/Keck Array and Planck Data},
doi = {10.1103/PhysRevLett.114.101301},
author = {Ade, P. A. R. and Battaner López, Eduardo and BICEP KECK and Planck Collaboration},
}