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Title: A Comparison of Cosmological Parameters Determined from CMB Temperature Power Spectra from the South Pole Telescope and the Planck Satellite

Abstract

The Planck cosmic microwave background temperature data are best fit with a ΛCDM model that mildly contradicts constraints from other cosmological probes. The South Pole Telescope (SPT) 2540 $${\deg }^{2}$$ SPT-SZ survey offers measurements on sub-degree angular scales (multipoles $$650\leqslant {\ell }\leqslant 2500$$) with sufficient precision to use as an independent check of the Planck data. Here we build on the recent joint analysis of the SPT-SZ and Planck data in Hou et al. by comparing ΛCDM parameter estimates using the temperature power spectrum from both data sets in the SPT-SZ survey region. We also restrict the multipole range used in parameter fitting to focus on modes measured well by both SPT and Planck, thereby greatly reducing sample variance as a driver of parameter differences and creating a stringent test for systematic errors. We find no evidence of systematic errors from these tests. When we expand the maximum multipole of SPT data used, we see low-significance shifts in the angular scale of the sound horizon and the physical baryon and cold dark matter densities, with a resulting trend to higher Hubble constant. When we compare SPT and Planck data on the SPT-SZ sky patch to Planck full-sky data but keep the multipole range restricted, we find differences in the parameters n s and $${A}_{s}{e}^{-2\tau }$$. We perform further checks, investigating instrumental effects and modeling assumptions, and we find no evidence that the effects investigated are responsible for any of the parameter shifts. Taken together, these tests reveal no evidence for systematic errors in SPT or Planck data in the overlapping sky coverage and multipole range and at most weak evidence for a breakdown of ΛCDM or systematic errors influencing either the Planck data outside the SPT-SZ survey area or the SPT data at $${\ell }\gt 2000$$.

Authors:
 [1];  [2];  [1];  [3];  [4];  [5];  [6];  [7];  [8];  [9]; ORCiD logo [2];  [10];  [11];  [12];  [13]; ORCiD logo [14];  [15];  [16]; ORCiD logo [17];  [16] more »;  [18];  [19];  [20];  [2];  [18]; ORCiD logo [21];  [22];  [23];  [1];  [2];  [24];  [25]; ORCiD logo [9];  [2];  [2]; ORCiD logo [26];  [27];  [28];  [29];  [30];  [31]; ORCiD logo [32];  [33]; ORCiD logo [34];  [2] « less
  1. Univ. of California, Davis, CA (United States). Department of Physics
  2. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Department of Astronomy and Astrophysics
  3. Stanford Univ., CA (United States). Kavli Institute for Particle Astrophysics and Cosmology and Dept. of Physics
  4. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Department of Astronomy and Astrophysics; Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  5. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  6. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics, Department of Astronomy and Astrophysics, Department of Physics and Enrico Fermi Institute; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  7. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Department of Astronomy and Astrophysics; Argonne National Lab. (ANL), Argonne, IL (United States). High Energy Physics Division
  8. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  9. McGill Univ., Montreal, QC (Canada). Department of Physics and McGill Space Institute
  10. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Department of Astronomy and Astrophysics; California Inst. of Technology (CalTech), Pasadena, CA (United States)
  11. McGill Univ., Montreal, QC (Canada). Department of Physics and McGill Space Institute; Univ. of California, Berkeley, CA (United States). Department of Physics
  12. McGill Univ., Montreal, QC (Canada). Department of Physics and McGill Space Institute; Canadian Institute for Advanced Research, CIFAR Program in Cosmology and Gravity, Toronto, ON (Canada)
  13. Univ. of Colorado, Boulder, CO (United States). Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences
  14. Univ. of California, Berkeley, CA (United States). Department of Physics; European Southern Observatory, Garching (Germany)
  15. Univ. of Colorado, Boulder, CO (United States). Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences and Department of Physics
  16. Univ. of California, Berkeley, CA (United States). Department of Physics
  17. McGill Univ., Montreal, QC (Canada). Department of Physics and McGill Space Institute; Canadian Institute for Advanced Research, CIFAR Program in Cosmology and Gravity, Toronto, ON (Canada); University of Illinois at Urbana-Champaign, Urbana, IL (United States). Astronomy Department and Department of Physics
  18. Univ. of Chicago, IL (United States)
  19. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Department of Physics; Stanford Univ., CA (United States). Kavli Institute for Particle Astrophysics and Cosmology;
  20. Univ. of California, Berkeley, CA (United States). Department of Physics ; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Physics Division
  21. Univ. of Arizona, Tucson, AZ (United States). Steward Observator
  22. Univ. of Michigan, Ann Arbor, MI (United States). Department of Physics
  23. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics, Department of Astronomy and Astrophysics, Department of Physics, and Enrico Fermi Institute
  24. Ludwig-Maximilians-Universität, München (Germany). Faculty of Physics; Excellence Cluster Universe, Garching (Germany); Max-Planck-Institut für extraterrestrische Physik, Garching (Germany)
  25. University of Toronto, ON (Canada). Dunlap Institute for Astronomy & Astrophysics
  26. Univ. of California, Berkeley, CA (United States); University of Melbourne, Parkville, VIC (Australia). School of Physics
  27. Case Western Reserve University, Cleveland, OH (United States). Physics Department, Center for Education and Research in Cosmology and Astrophysics
  28. Univ. of Colorado, Boulder, CO (United States). Center for Astrophysics and Space Astronomy, Department of Astrophysical and Planetary Sciences; Case Western Reserve University, Cleveland, OH (United States). Physics Department, Center for Education and Research in Cosmology and Astrophysics
  29. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Enrico Fermi Institute; School of the Art Institute of Chicago, IL (United States). Liberal Arts Department
  30. Univ. of Chicago, IL (United States). Kavli Institute for Cosmological Physics and Department of Astronomy and Astrophysics; Univ. of California, Berkeley, CA (United States). Department of Physics
  31. Case Western Reserve University, Cleveland, OH (United States). Physics Department, Center for Education and Research in Cosmology and Astrophysics; California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Laboratory
  32. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  33. University of Toronto, ON (Canada). Dunlap Institute for Astronomy & Astrophysics and Department of Astronomy & Astrophysics
  34. University of Illinois at Urbana-Champaign, Urbana, IL (United States). Astronomy Department and Department of Physics
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
SPT
OSTI Identifier:
1419642
Alternate Identifier(s):
OSTI ID: 1439977
Report Number(s):
FERMILAB-PUB-17-266-AE; arXiv:1706.10286
Journal ID: ISSN 1538-4357
Grant/Contract Number:
AC02-76SF00515; AC02-07CH11359; AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
The Astrophysical Journal (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal (Online); Journal Volume: 850; Journal Issue: 1; Journal ID: ISSN 1538-4357
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS

Citation Formats

Aylor, K., Hou, Z., Knox, L., Story, K. T., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H-M., Chown, R., Crawford, T. M., Crites, A. T., Haan, T. de, Dobbs, M. A., Everett, W. B., George, E. M., Halverson, N. W., Harrington, N. L., Holder, G. P., Holzapfel, W. L., Hrubes, J. D., Keisler, R., Lee, A. T., Leitch, E. M., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mocanu, L. 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., Vanderlinde, K., Vieira, J. D., and Williamson, R.. A Comparison of Cosmological Parameters Determined from CMB Temperature Power Spectra from the South Pole Telescope and the Planck Satellite. United States: N. p., 2017. Web. doi:10.3847/1538-4357/aa947b.
Aylor, K., Hou, Z., Knox, L., Story, K. T., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H-M., Chown, R., Crawford, T. M., Crites, A. T., Haan, T. de, Dobbs, M. A., Everett, W. B., George, E. M., Halverson, N. W., Harrington, N. L., Holder, G. P., Holzapfel, W. L., Hrubes, J. D., Keisler, R., Lee, A. T., Leitch, E. M., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mocanu, L. 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., Vanderlinde, K., Vieira, J. D., & Williamson, R.. A Comparison of Cosmological Parameters Determined from CMB Temperature Power Spectra from the South Pole Telescope and the Planck Satellite. United States. doi:10.3847/1538-4357/aa947b.
Aylor, K., Hou, Z., Knox, L., Story, K. T., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Cho, H-M., Chown, R., Crawford, T. M., Crites, A. T., Haan, T. de, Dobbs, M. A., Everett, W. B., George, E. M., Halverson, N. W., Harrington, N. L., Holder, G. P., Holzapfel, W. L., Hrubes, J. D., Keisler, R., Lee, A. T., Leitch, E. M., Luong-Van, D., Marrone, D. P., McMahon, J. J., Meyer, S. S., Millea, M., Mocanu, L. 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., Vanderlinde, K., Vieira, J. D., and Williamson, R.. Mon . "A Comparison of Cosmological Parameters Determined from CMB Temperature Power Spectra from the South Pole Telescope and the Planck Satellite". United States. doi:10.3847/1538-4357/aa947b. https://www.osti.gov/servlets/purl/1419642.
@article{osti_1419642,
title = {A Comparison of Cosmological Parameters Determined from CMB Temperature Power Spectra from the South Pole Telescope and the Planck Satellite},
author = {Aylor, K. and Hou, Z. and Knox, L. and Story, K. T. and Benson, B. A. and Bleem, L. E. and Carlstrom, J. E. and Chang, C. L. and Cho, H-M. and Chown, R. and Crawford, T. M. and Crites, A. T. and Haan, T. de and Dobbs, M. A. and Everett, W. B. and George, E. M. and Halverson, N. W. and Harrington, N. L. and Holder, G. P. and Holzapfel, W. L. and Hrubes, J. D. and Keisler, R. and Lee, A. T. and Leitch, E. M. and Luong-Van, D. and Marrone, D. P. and McMahon, J. J. and Meyer, S. S. and Millea, M. and Mocanu, L. 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 Vanderlinde, K. and Vieira, J. D. and Williamson, R.},
abstractNote = {The Planck cosmic microwave background temperature data are best fit with a ΛCDM model that mildly contradicts constraints from other cosmological probes. The South Pole Telescope (SPT) 2540 ${\deg }^{2}$ SPT-SZ survey offers measurements on sub-degree angular scales (multipoles $650\leqslant {\ell }\leqslant 2500$) with sufficient precision to use as an independent check of the Planck data. Here we build on the recent joint analysis of the SPT-SZ and Planck data in Hou et al. by comparing ΛCDM parameter estimates using the temperature power spectrum from both data sets in the SPT-SZ survey region. We also restrict the multipole range used in parameter fitting to focus on modes measured well by both SPT and Planck, thereby greatly reducing sample variance as a driver of parameter differences and creating a stringent test for systematic errors. We find no evidence of systematic errors from these tests. When we expand the maximum multipole of SPT data used, we see low-significance shifts in the angular scale of the sound horizon and the physical baryon and cold dark matter densities, with a resulting trend to higher Hubble constant. When we compare SPT and Planck data on the SPT-SZ sky patch to Planck full-sky data but keep the multipole range restricted, we find differences in the parameters n s and ${A}_{s}{e}^{-2\tau }$. We perform further checks, investigating instrumental effects and modeling assumptions, and we find no evidence that the effects investigated are responsible for any of the parameter shifts. Taken together, these tests reveal no evidence for systematic errors in SPT or Planck data in the overlapping sky coverage and multipole range and at most weak evidence for a breakdown of ΛCDM or systematic errors influencing either the Planck data outside the SPT-SZ survey area or the SPT data at ${\ell }\gt 2000$.},
doi = {10.3847/1538-4357/aa947b},
journal = {The Astrophysical Journal (Online)},
number = 1,
volume = 850,
place = {United States},
year = {Mon Nov 20 00:00:00 EST 2017},
month = {Mon Nov 20 00:00:00 EST 2017}
}

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