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    A Comparison of Maps and Power Spectra Determined from South Pole Telescope and Planck Data

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    Hou_2018_ApJ_853_3.pdf
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    Author
    Hou, Z.
    Aylor, K.
    Benson, B. A.
    Bleem, L. E.
    Carlstrom, J. E.
    Chang, C. L.
    Cho, H-M.
    Chown, R.
    Crawford, T. M. cc
    Crites, A. T.
    Haan, T. de cc
    Dobbs, M. A.
    Everett, W. B.
    Follin, B.
    George, E. M. cc
    Halverson, N. W.
    Harrington, N. L.
    Holder, G. P. cc
    Holzapfel, W. L.
    Hrubes, J. D.
    Keisler, R.
    Knox, L.
    Lee, A. T.
    Leitch, E. M.
    Luong-Van, D.
    Marrone, Daniel P. cc
    McMahon, J. J.
    Meyer, S. S.
    Millea, M.
    Mocanu, L. M.
    Mohr, J. J.
    Natoli, T.
    Omori, Y. cc
    Padin, S.
    Pryke, C.
    Reichardt, C. L. cc
    Ruhl, J. E.
    Sayre, J. T.
    Schaffer, K. K.
    Shirokoff, E.
    Staniszewski, Z.
    Stark, A. A. cc
    Story, K. T.
    Vanderlinde, K.
    Vieira, J. D. cc
    Williamson, R.
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    Affiliation
    Univ Arizona, Steward Observ
    Issue Date
    2018-01-17
    Keywords
    cosmic background radiation
    methods: data analysis
    
    Metadata
    Show full item record
    Publisher
    IOP PUBLISHING LTD
    Citation
    A Comparison of Maps and Power Spectra Determined from South Pole Telescope and Planck Data 2018, 853 (1):3 The Astrophysical Journal
    Journal
    The Astrophysical Journal
    Rights
    © 2018. The American Astronomical Society. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    We study the consistency of 150 GHz data from the South Pole Telescope (SPT) and 143 GHz data from the Planck satellite over the patch of sky covered by the SPT-SZ survey. We first visually compare the maps and find that the residuals appear consistent with noise after accounting for differences in angular resolution and filtering. We then calculate (1) the cross-spectrum between two independent halves of SPT data, (2) the cross-spectrum between two independent halves of Planck data, and (3) the cross-spectrum between SPT and Planck data. We find that the three cross-spectra are well fit (PTE = 0.30) by the null hypothesis in which both experiments have measured the same sky map up to a single free calibration parameter-i.e., we find no evidence for systematic errors in either data set. As a by-product, we improve the precision of the SPT calibration by nearly an order of magnitude, from 2.6% to 0.3% in power. Finally, we compare all three cross-spectra to the full-sky Planck power spectrum and find marginal evidence for differences between the power spectra from the SPT-SZ footprint and the full sky. We model these differences as a power law in spherical harmonic multipole number. The best-fit value of this tilt is consistent among the three cross-spectra in the SPT-SZ footprint, implying that the source of this tilt is a sample variance fluctuation in the SPT-SZ region relative to the full sky. The consistency of cosmological parameters derived from these data sets is discussed in a companion paper.
    ISSN
    1538-4357
    DOI
    10.3847/1538-4357/aaa3ef
    Version
    Final published version
    Sponsors
    National Science Foundation [PLR-1248097]; NSF Physics Frontier Center [PHY-1125897]; Kavli Foundation; Gordon and Betty Moore Foundation [GBMF 947]; National Sciences and Engineering Research Council of Canada; Canada Research Chairs program; Canadian Institute for Advanced Research; U.S. Department of Energy [DE-AC02-06CH11357]; Fermi Research Alliance, LLC [De-AC02-07CH11359]; U.S. Department of Energy; Australian Research Councils Future Fellowship [FT150100074]
    Additional Links
    http://stacks.iop.org/0004-637X/853/i=1/a=3?key=crossref.ef3911111e955a71c6ed227b060b4205
    ae974a485f413a2113503eed53cd6c53
    10.3847/1538-4357/aaa3ef
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