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Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data

Crites, A. T. and Padin, S. and Vieira, J. D. (2015) Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data. Astrophysical Journal, 805 (1). Art. No. 36. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20150622-135039385

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Abstract

We present measurements of E-mode polarization and temperature-E-mode correlation in the cosmic microwave background using data from the first season of observations with SPTpol, the polarization-sensitive receiver currently installed on the South Pole Telescope (SPT). The observations used in this work cover 100 deg^2 of sky with arcminute resolution at 150 GHz. We report the E-mode angular auto-power spectrum (EE) and the temperature-E-mode angular cross-power spectrum (TE) over the multipole range 500 < ℓ ≤ 5000. These power spectra improve on previous measurements in the high-ℓ (small-scale) regime. We fit the combination of the SPTpol power spectra, data from Planck, and previous SPT measurements with a six-parameter ΛCDM cosmological model. We find that the best-fit parameters are consistent with previous results. The improvement in high-ℓ sensitivity over previous measurements leads to a significant improvement in the limit on polarized point-source power: after masking sources brighter than 50 mJy in unpolarized flux at 150 GHz, we find a 95% confidence upper limit on unclustered point-source power in the EE spectrum of D_ℓ = ℓ(ℓ + 1) C_ℓ/2π < 0.40 µK^2 at ℓ = 3000, indicating that future EE measurements will not be limited by power from unclustered point sources in the multipole range ℓ < 3600, and possibly much higher in ℓ.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1088/0004-637X/805/1/36DOIArticle
http://iopscience.iop.org/0004-637X/805/1/36/PublisherArticle
http://arxiv.org/abs/1411.1042arXivDiscussion Paper
Additional Information:© 2015 American Astronomical Society. Received 2014 November 4; accepted 2015 February 22; published 2015 May 18. We thank Joshua Schiffrin for help with the mode-mode coupling kernel calculation. We also thank Wayne Hu and Aurien Benoit-Lévy for help implementing the super-sample lensing covariance. The McGill authors acknowledge funding from the Natural Sciences and Engineering Research Council of Canada, Canadian Institute for Advanced Research, and Canada Research Chairs program. The South Pole Telescope program is supported by the National Science Foundation through grant PLR-1248097. Partial support is also provided by the NSF Physics Frontier Center grant PHY-0114422 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation, and the Gordon and Betty Moore Foundation through Grant GBMF#947 to the University of Chicago. J.W.H. is supported by the National Science Foundation under Award No. AST-1402161. B.B. is supported by the Fermi Research Alliance, LLC under Contract No. De-AC02-07CH11359 with the US Department of Energy. The CU Boulder group acknowledges support from NSF AST-0956135. This work is also supported by the US Department of Energy. Work at Argonne National Lab is supported by UChicago Argonne, LLC, Operator of Argonne National Laboratory (Argonne). Argonne, a US Department of Energy Office of Science Laboratory, is operated under Contract No. DE-AC02-06CH11357. We also acknowledge support from the Argonne Center for Nanoscale Materials. The data analysis pipeline uses the scientific python stack (Jones et al. 2001; Hunter 2007; van der Walt et al. 2011) and the HDF5 file format (The HDF Group 1997).
Funders:
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Canadian Institute for Advanced Research (CIAR)UNSPECIFIED
Canada Research Chairs programUNSPECIFIED
NSFPLR-1248097
NSF Physics Frontier CenterPHY-0114422
Kavli FoundationUNSPECIFIED
Gordon and Betty Moore FoundationGBMF 947
NSFAST-1402161
Department of Energy (DOE)DE-AC02-07CH11359
NSFAST- 0956135
Department of Energy (DOE)DE-AC02-06CH11357
Argonne Center for Nanoscale MaterialsUNSPECIFIED
Subject Keywords:cosmic background radiation; cosmology: observations; polarization
Issue or Number:1
Record Number:CaltechAUTHORS:20150622-135039385
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150622-135039385
Official Citation:Measurements of E-Mode Polarization and Temperature-E-Mode Correlation in the Cosmic Microwave Background from 100 Square Degrees of SPTpol Data A. T. Crites et al. 2015 ApJ 805 36
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:58410
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:22 Jun 2015 21:32
Last Modified:03 Oct 2019 08:35

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