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Constraints on Cosmological Parameters from the Angular Power Spectrum of a Combined 2500 deg2 SPT-SZ and Planck Gravitational Lensing Map

Journal Article · · The Astrophysical Journal (Online)
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  1. McGill Univ., Montreal, QC (Canada)
  2. McGill Univ., Montreal, QC (Canada); Stanford Univ., Stanford, CA (United States)
  3. Univ. of California, Davis, CA (United States)
  4. Univ. of Pennsylvania, Philadelphia, PA (United States); Univ. of Chicago, Chicago, IL (United States)
  5. Univ. of Chicago, Chicago, IL (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  6. Univ. of Chicago, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  7. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  8. Univ. of Chicago, Chicago, IL (United States)
  9. Univ. of Chicago, Chicago, IL (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States)
  10. McGill Univ., Montreal, QC (Canada); Univ. of California, Berkeley, CA (United States)
  11. McGill Univ., Montreal, QC (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada)
  12. Univ. of Colorado, Boulder, CO (United States)
  13. Univ. of California, Berkeley, CA (United States); European Southern Observatory, Garching (Germany)
  14. Univ. of California, Berkeley, CA (United States)
  15. McGill Univ., Montreal, QC (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada); Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
  16. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  17. Univ. of Michigan, Ann Arbor, MI (United States)
  18. Ludwig-Maximilians-Univ., Munchen (Germany); Excellence Cluster Universe, Garching (Germany); Max-Planck-Institut fur extraterrestrische Physik, Garching (Germany)
  19. Univ. of Chicago, Chicago, IL (United States); Univ. of Toronto, Toronto, ON (Canada)
  20. Univ. of Minnesota, Minneapolis, MN (United States)
  21. Univ. of California, Berkeley, CA (United States); Univ. of Melbourne, Parkville, VIC (Australia)
  22. Case Western Reserve Univ., Cleveland, OH (United States)
  23. Univ. of Colorado, Boulder, CO (United States); Case Western Reserve Univ., Cleveland, OH (United States)
  24. Univ. of Chicago, Chicago, IL (United States); School of the Art Institute of Chicago, Chicago, IL (United States)
  25. Univ. of Chicago, Chicago, IL (United States); Univ. of California, Berkeley, CA (United States)
  26. Case Western Reserve Univ., Cleveland, OH (United States); California Inst. of Technology (CalTech), Pasadena, CA (United States)
  27. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  28. Stanford Univ., Stanford, CA (United States); Univ. of Chicago, Chicago, IL (United States)
  29. Univ. of Toronto, Toronto, ON (Canada)
  30. Univ. of Illinois at Urbana-Champaign, Urbana, IL (United States)
+ Show Author Affiliations
Here, we report constraints on cosmological parameters from the angular power spectrum of a cosmic microwave background (CMB) gravitational lensing potential map created using temperature data from 2500 deg$^2$ of South Pole Telescope (SPT) data supplemented with data from Planck in the same sky region, with the statistical power in the combined map primarily from the SPT data. We fit the corresponding lensing angular power spectrum to a model including cold dark matter and a cosmological constant ($$\Lambda$$CDM), and to models with single-parameter extensions to $$\Lambda$$CDM. We find constraints that are comparable to and consistent with constraints found using the full-sky Planck CMB lensing data. Specifically, we find $$\sigma_8 \Omega_{\rm m}^{0.25}=0.598 \pm 0.024$$ from the lensing data alone with relatively weak priors placed on the other $$\Lambda$$CDM parameters. In combination with primary CMB data from Planck, we explore single-parameter extensions to the $$\Lambda$$CDM model. We find $$\Omega_k = -0.012^{+0.021}_{-0.023}$$ or $$M_{\nu}< 0.70$$eV both at 95% confidence, all in good agreement with results that include the lensing potential as measured by Planck over the full sky. We include two independent free parameters that scale the effect of lensing on the CMB: $$A_{L}$$, which scales the lensing power spectrum in both the lens reconstruction power and in the smearing of the acoustic peaks, and $$A^{\phi \phi}$$, which scales only the amplitude of the CMB lensing reconstruction power spectrum. We find $$A^{\phi \phi} \times A_{L} =1.01 \pm 0.08$$ for the lensing map made from combined SPT and Planck temperature data, indicating that the amount of lensing is in excellent agreement with what is expected from the observed CMB angular power spectrum when not including the information from smearing of the acoustic peaks.
Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation; National Science Foundation (NSF); Natural Sciences and Engineering Research Council of Canada (NSERC); USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
SPT
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; AC02-07CH11359
OSTI ID:
1431574
Alternate ID(s):
OSTI ID: 1460984
OSTI ID: 1490702
Report Number(s):
FERMILAB-PUB--17-608-AE; arXiv:1712.07541; 1644334
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 860; ISSN 1538-4357
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (10)

CMB lensing reconstruction biases in cross-correlation with large-scale structure probes journal October 2019
Dark Energy Survey Year 1 results: constraints on intrinsic alignments and their colour dependence from galaxy clustering and weak lensing journal August 2019
Dark Energy Survey Year 1 Results: Cross-correlation between Dark Energy Survey Y1 galaxy weak lensing and South Pole Telescope + P l a n c k CMB weak lensing journal August 2019
Effect of non-Gaussian lensing deflections on CMB lensing measurements journal December 2018
Lensing covariance on cut sky and SPT − P l a n c k lensing tensions journal January 2019
Constraints on Cosmological Parameters from the 500 deg 2 SPTPOL Lensing Power Spectrum journal January 2020
Maps of the Southern Millimeter-wave Sky from Combined 2500 deg 2 SPT-SZ and Planck Temperature Data journal November 2018
On the effect of non-Gaussian lensing deflections on CMB lensing measurements text January 2018
Dark Energy Survey Year 1 Results: Constraints on Intrinsic Alignments and their Colour Dependence from Galaxy Clustering and Weak Lensing text January 2018
Constraints on Cosmological Parameters from the 500 deg$^2$ SPTpol Lensing Power Spectrum text January 2019

Figures / Tables (8)

Figure 1(p. 3)figure Figure 1
Figure 2(p. 5)figure Figure 2
Table 1(p. 5)table Table 1
Figure 3(p. 6)figure Figure 3
Figure 4(p. 7)figure Figure 4
Figure 5(p. 8)figure Figure 5
Figure 6(p. 8)figure Figure 6
Figure 7(p. 8)figure Figure 7

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Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
cosmic background radiation
cosmological parameters
gravitational lensing
weak