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Modeling atmospheric emission for CMB ground-based observations

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Title: Modeling atmospheric emission for CMB ground-based observations
Authors: Errard, J
Ade, PAR
Akiba, Y
Arnold, K
Atlas, M
Baccigalupi, C
Barron, D
Boettger, D
Borrill, J
Chapman, S
Chinone, Y
Cukierman, A
Delabrouille, J
Dobbs, M
Ducout, A
Elleflot, T
Fabbian, G
Feng, C
Feeney, S
Gilbert, A
Goeckner-Wald, N
Halverson, NW
Hasegawa, M
Hattori, K
Hazumi, M
Hill, C
Holzapfel, WL
Hori, Y
Inoue, Y
Jaehnig, GC
Jaffe, AH
Jeong, O
Katayama, N
Kaufman, J
Keating, B
Kermish, Z
Keskitalo, R
Kisner, T
Le Jeune, M
Lee, AT
Leitch, EM
Leon, D
Linder, E
Matsuda, F
Matsumura, T
Miller, NJ
Myers, MJ
Navaroli, M
Nishino, H
Okamura, T
Paar, H
Peloton, J
Poletti, D
Puglisi, G
Rebeiz, G
Reichardt, CL
Richards, PL
Ross, C
Rotermund, KM
Schenck, DE
Sherwin, BD
Siritanasak, P
Smecher, G
Stebor, N
Steinbach, B
Stompor, R
Suzuki, A
Tajima, O
Takakura, S
Tikhomirov, A
Tomaru, T
Whitehorn, N
Wilson, B
Yadav, A
Zahn, O
Item Type: Journal Article
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 an original numerical computation, we examine the effect of each physical parameter on the correlations in the time series of a given experiment. We then use a parametric-likelihood approach to validate the modeling and estimate atmosphere parameters from the polarbear-i project first season data set. We derive a new 1.0% upper limit on the linear polarization fraction of atmospheric emission. We also compare our results to previous studies and weather station measurements. The proposed model can be used for realistic simulations of future ground-based CMB observations.
Issue Date: 10-Aug-2015
Date of Acceptance: 4-Jun-2015
URI: http://hdl.handle.net/10044/1/60853
DOI: https://dx.doi.org/10.1088/0004-637X/809/1/63
ISSN: 0004-637X
Publisher: American Astronomical Society
Journal / Book Title: Astrophysical Journal
Volume: 809
Issue: 1
Copyright Statement: © 2015 The American Astronomical Society. All rights reserved.
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Imperial College Trust
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council [2006-2012]
Funder's Grant Number: ST/J001368/1
N/A
ST/K001051/1
ST/K001051/1
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
atmospheric effects
methods: data analysis
methods: observational
MICROWAVE BACKGROUND EXPERIMENTS
COMPONENT SEPARATION
FLUCTUATIONS
POLARIZATION
TURBULENCE
SITES
NOISE
astro-ph.IM
astro-ph.CO
0201 Astronomical And Space Sciences
0305 Organic Chemistry
0306 Physical Chemistry (Incl. Structural)
Publication Status: Published
Article Number: 63
Online Publication Date: 2015-08-11
Appears in Collections:Physics
Astrophysics
Faculty of Natural Sciences



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