Journal
ASTROPHYSICAL JOURNAL
Volume 860, Issue 2, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.3847/1538-4357/aac264
Keywords
cosmic background radiation; cosmological parameters; gravitational lensing: weak
Categories
Funding
- National Science Foundation [PLR-1248097]
- NSF Physics Frontier Center [PHY-0114422]
- Kavli Foundation
- Gordon and Betty Moore Foundation [947]
- CFI
- MESI
- FRQNT
- NSF [OCI-0725070, ACI-1238993]
- state of Illinois
- Natural Sciences and Engineering Research Council of Canada
- Canadian Institute for Advanced Research
- Canada Research Chairs program
- Fonds de recherche du Quebec-Nature et technologies
- Fermi Research Alliance, LLC [DE-AC02-07CH11359]
- U.S. Department of Energy, Office of Science, Office of High Energy Physics
- Australian Research Councils [DP150103208]
- U.S. Department of Energy [DE-AC02-06CH11357]
- Office of Polar Programs (OPP) [1248097] Funding Source: National Science Foundation
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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 lensing power spectrum to a model including cold dark matter and a cosmological constant (ACDM), and to models with single-parameter extensions to Lambda CDM. We find constraints that are comparable to and consistent with those found using the full-sky Planck CMB lensing data, e.g., sigma(g)Omega(0.2)(5)(m) = 0.598 +/- 0.024 from the lensing data alone with weak priors placed on other parameters. Combining with primary CMB data, we explore single-parameter extensions to ACDM. We find Omega(k =) -0.0121(-0.023)(+0.021)or M-v < 0.70 eV at 95% confidence, in good agreement with results including the lensing potential as measured by Planck. We include two 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 lensing reconstruction power spectrum. We find A(phi phi) x A(L) = 1.01 +/- 0.08 for the lensing map made from combined SPT and Planck data, indicating that the amount of lensing is in excellent agreement with expectations from the observed CMB angular power spectrum when not including the information from smearing of the acoustic peaks.
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