Journal article
MODELING ATMOSPHERIC EMISSION for CMB GROUND-BASED OBSERVATIONS
J Errard, PAR Ade, Y Akiba, K Arnold, M Atlas, C Baccigalupi, D Barron, D Boettger, J Borrill, S Chapman, Y Chinone, A Cukierman, J Delabrouille, M Dobbs, A Ducout, T Elleflot, G Fabbian, C Feng, S Feeney, A Gilbert Show all
Astrophysical Journal | IOP PUBLISHING LTD | Published : 2015
Abstract
Atmosphere is one of the most important noise sources for ground-based cosmic microwave background (CMB) experiments. By increasing optical loading on the detectors, it amplifies their effective noise, while its fluctuations introduce spatial and temporal correlations between detected signals. We present a physically motivated 3D-model of the atmosphere total intensity emission in the millimeter and sub-millimeter wavelengths. We derive a new analytical estimate for the correlation between detectors time-ordered data as a function of the instrument and survey design, as well as several atmospheric parameters such as wind, relative humidity, temperature and turbulence characteristics. Using a..
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Awarded by Science and Technology Facilities Council
Funding Acknowledgements
Calculations were performed on the National Energy Research Scientific Computing (NERSC), supported by the Department of Energy under Contract No. DE-AC02-05CH11231. The POLARBEAR project is funded by the National Science Foundation under grants 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). Finally, we would like to acknowledge the tremendous contributions by Huan Tran to the POLARBEAR instrument and who has been at the initiation of this particular project on atmosphere characterization.