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Title: Consistency of cosmic microwave background temperature measurements in three frequency bands in the 2500-square-degree SPT-SZ survey

Abstract

We present an internal consistency test of South Pole Telescope (SPT) measurements of the cosmic microwave background (CMB) temperature anisotropy using three-band data from the SPT-SZ survey. These measurements are made from observations of ~ 2500 °2 of sky in three frequency bands centered at 95, 150, and 220 GHz. We combine the information from these three bands into six semi-independent estimates of the CMB power spectrum (three single-frequency power spectra and three cross-frequency spectra) over the multipole range 650<ℓ<3000. We subtract an estimate of foreground power from each power spectrum and evaluate the consistency among the resulting CMB-only spectra. We determine that the six foreground-cleaned power spectra are consistent with the null hypothesis, in which the six cleaned spectra contain only CMB power and noise. A fit of the data to this model results in a χ2 value of 236.3 for 235 degrees of freedom, and the probability to exceed this χ2 value is 46%.

Authors:
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Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
Contributing Org.:
SPT-SZ Survey; SPT Collaboration
OSTI Identifier:
1546031
Alternate Identifier(s):
OSTI ID: 1572452
Report Number(s):
arXiv:1904.12995; FERMILAB-PUB-19-201-AE
Journal ID: ISSN 1475-7516; 1732290
Grant/Contract Number:  
AC02-07CH11359; AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Cosmology and Astroparticle Physics
Additional Journal Information:
Journal Volume: 2019; Journal Issue: 07; Journal ID: ISSN 1475-7516
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; CMBR experiments; cosmological parameters from CMBR

Citation Formats

Mocanu, L. M., Crawford, T. M., Aylor, K., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H. -M., Chown, R., Crites, A. T., de Haan, T., Dobbs, M. A., Everett, W. B., George, E. M., Halverson, N. W., Harrington, N. L., Henning, J. W., Holder, G. P., Holzapfel, W. L., Hou, Z., Hrubes, J. D., Knox, L., Lee, A. T., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mohr, J. J., Natoli, T., Omori, Y., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Sayre, J. T., Schaffer, K. K., Shirokoff, E., Staniszewski, Z., Stark, A. A., Story, K. T., Vanderlinde, K., Vieira, J. D., Williamson, R., and Wu, W. L. K. Consistency of cosmic microwave background temperature measurements in three frequency bands in the 2500-square-degree SPT-SZ survey. United States: N. p., 2019. Web. doi:10.1088/1475-7516/2019/07/038.
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Mocanu, L. M., Crawford, T. M., Aylor, K., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H. -M., Chown, R., Crites, A. T., de Haan, T., Dobbs, M. A., Everett, W. B., George, E. M., Halverson, N. W., Harrington, N. L., Henning, J. W., Holder, G. P., Holzapfel, W. L., Hou, Z., Hrubes, J. D., Knox, L., Lee, A. T., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mohr, J. J., Natoli, T., Omori, Y., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Sayre, J. T., Schaffer, K. K., Shirokoff, E., Staniszewski, Z., Stark, A. A., Story, K. T., Vanderlinde, K., Vieira, J. D., Williamson, R., & Wu, W. L. K. Consistency of cosmic microwave background temperature measurements in three frequency bands in the 2500-square-degree SPT-SZ survey. United States. https://doi.org/10.1088/1475-7516/2019/07/038
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Mocanu, L. M., Crawford, T. M., Aylor, K., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H. -M., Chown, R., Crites, A. T., de Haan, T., Dobbs, M. A., Everett, W. B., George, E. M., Halverson, N. W., Harrington, N. L., Henning, J. W., Holder, G. P., Holzapfel, W. L., Hou, Z., Hrubes, J. D., Knox, L., Lee, A. T., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mohr, J. J., Natoli, T., Omori, Y., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Sayre, J. T., Schaffer, K. K., Shirokoff, E., Staniszewski, Z., Stark, A. A., Story, K. T., Vanderlinde, K., Vieira, J. D., Williamson, R., and Wu, W. L. K. Wed . "Consistency of cosmic microwave background temperature measurements in three frequency bands in the 2500-square-degree SPT-SZ survey". United States. https://doi.org/10.1088/1475-7516/2019/07/038. https://www.osti.gov/servlets/purl/1546031.
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@article{osti_1546031,
title = {Consistency of cosmic microwave background temperature measurements in three frequency bands in the 2500-square-degree SPT-SZ survey},
author = {Mocanu, L. M. and Crawford, T. M. and Aylor, K. and Benson, B. A. and Bleem, L. E. and Carlstrom, J. E. and Chang, C. L. and Cho, H. -M. and Chown, R. and Crites, A. T. and de Haan, T. and Dobbs, M. A. and Everett, W. B. and George, E. M. and Halverson, N. W. and Harrington, N. L. and Henning, J. W. and Holder, G. P. and Holzapfel, W. L. and Hou, Z. and Hrubes, J. D. and Knox, L. and Lee, A. T. and Luong-Van, D. and Marrone, D. P. and McMahon, J. J. and Meyer, S. S. and Millea, M. and Mohr, J. J. and Natoli, T. and Omori, Y. and Padin, S. and Pryke, C. and Reichardt, C. L. and Ruhl, J. E. and Sayre, J. T. and Schaffer, K. K. and Shirokoff, E. and Staniszewski, Z. and Stark, A. A. and Story, K. T. and Vanderlinde, K. and Vieira, J. D. and Williamson, R. and Wu, W. L. K.},
abstractNote = {We present an internal consistency test of South Pole Telescope (SPT) measurements of the cosmic microwave background (CMB) temperature anisotropy using three-band data from the SPT-SZ survey. These measurements are made from observations of ~ 2500 °2 of sky in three frequency bands centered at 95, 150, and 220 GHz. We combine the information from these three bands into six semi-independent estimates of the CMB power spectrum (three single-frequency power spectra and three cross-frequency spectra) over the multipole range 650<ℓ<3000. We subtract an estimate of foreground power from each power spectrum and evaluate the consistency among the resulting CMB-only spectra. We determine that the six foreground-cleaned power spectra are consistent with the null hypothesis, in which the six cleaned spectra contain only CMB power and noise. A fit of the data to this model results in a χ2 value of 236.3 for 235 degrees of freedom, and the probability to exceed this χ2 value is 46%.},
doi = {10.1088/1475-7516/2019/07/038},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 07,
volume = 2019,
place = {United States},
year = {Wed Jul 24 00:00:00 EDT 2019},
month = {Wed Jul 24 00:00:00 EDT 2019}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1088/1475-7516/2019/07/038
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Cited by: 5 works
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Figures / Tables:

Figure 1 Figure 1: Square root of the diagonal elements of the bandpower covariance matrix for each frequency combination, broken down into contributions from five different sources. We note that the sample variance contributions are not included in the fitting procedure described in Section 7.1. The covariance matrices are binned at themore » same ∆ℓ = 50 resolution as the data, so the plotted diagonal values also have that resolution.« less
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Works referenced in this record:

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    Works referencing / citing this record:

    Analytic Calculation of Covariance between Cosmological Parameters from Correlated Data Sets, with an Application to SPTpol
    journal, December 2019

    • Kable, Joshua A.; Addison, Graeme E.; Bennett, Charles L.
    • The Astrophysical Journal, Vol. 888, Issue 1
    • DOI: 10.3847/1538-4357/ab54cc
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      Figures / Tables found in this record:

      Figure 1 (p. 12)figure
      Figure 2 (p. 13)figure
      Table 1 (p. 14)table
      Figure 3 (p. 17)figure
      Figure 4 (p. 19)figure
      Table 2 (p. 22)table
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