Herein we present cosmological constraints based on the cosmic microwave background (CMB) lensing potential power spectrum measurement from the recent 500 deg2 SPTPOL survey, the most precise CMB lensing measurement from the ground to date. We fit a flat ΛCDM model to the reconstructed lensing power spectrum alone and in addition with other data sets: baryon acoustic oscillations (BAO), as well as primary CMB spectra from Planck and SPTPOL. The cosmological constraints based on SPTPOL and Planck lensing band powers are in good agreement when analyzed alone and in combination with Planck full-sky primary CMB data. With weak priors on the baryon density and other parameters, the SPTPOL CMB lensing data alone provide a 4% constraint on $$σ_{8}Ω_{m}^{0.25} = 0.593 ± 0.025 0.25$$. Jointly fitting with BAO data, we find $$σ_{8} = 0.779 ± 0.023, Ω_{m} = 0.368^{+0.032}_{–0.037}$$, and $$H_{0} = 72.0^{2.1}_{–2.5}$$ km s–1 Mpc–1, up to $2σ$ away from the central values preferred by Planck lensing $$+$$ BAO. However, we recover good agreement between SPTPOL and Planck when restricting the analysis to similar scales. We also consider single-parameter extensions to the flat ΛCDM model. The SPTPOL lensing spectrum constrains the spatial curvature to be $$Ω_{K} = -0.0007 ± 0.0025$$ and the sum of the neutrino masses to be $$Σm_{v} < 0.23$$ eV at 95% C.L. (with Planck primary CMB and BAO data), in good agreement with the Planck lensing results. With the differences in the signal-to-noise ratio of the lensing modes and the angular scales covered in the lensing spectra, this analysis represents an important independent check on the full-sky Planck lensing measurement.
Bianchini, F., et al. "Constraints on Cosmological Parameters from the 500 deg<sup>2</sup> SPT<small>POL</small> Lensing Power Spectrum." The Astrophysical Journal (Online), vol. 888, no. 2, Jan. 2020. https://doi.org/10.3847/1538-4357/ab6082
Bianchini, F., Wu, W. L. K., Ade, P. A. R., Anderson, A. J., Austermann, J. E., Avva, J. S., Beall, J. A., Bender, A. N., Benson, B. A., Bleem, L. E., Carlstrom, J. E., Chang, C. L., Chaubal, P., Chiang, H. C., Citron, R., Moran, C. Corbett, Crawford, T. M., Crites, A. T., ... Yefremenko, V. (2020). Constraints on Cosmological Parameters from the 500 deg<sup>2</sup> SPT<small>POL</small> Lensing Power Spectrum. The Astrophysical Journal (Online), 888(2). https://doi.org/10.3847/1538-4357/ab6082
Bianchini, F., Wu, W. L. K., Ade, P. A. R., et al., "Constraints on Cosmological Parameters from the 500 deg<sup>2</sup> SPT<small>POL</small> Lensing Power Spectrum," The Astrophysical Journal (Online) 888, no. 2 (2020), https://doi.org/10.3847/1538-4357/ab6082
@article{osti_1608979,
author = {Bianchini, F. and Wu, W. L. K. and Ade, P. A. R. and Anderson, A. J. and Austermann, J. E. and Avva, J. S. and Beall, J. A. and Bender, A. N. and Benson, B. A. and Bleem, L. E. and others},
title = {Constraints on Cosmological Parameters from the 500 deg<sup>2</sup> SPT<small>POL</small> Lensing Power Spectrum},
annote = {Herein we present cosmological constraints based on the cosmic microwave background (CMB) lensing potential power spectrum measurement from the recent 500 deg2 SPTPOL survey, the most precise CMB lensing measurement from the ground to date. We fit a flat ΛCDM model to the reconstructed lensing power spectrum alone and in addition with other data sets: baryon acoustic oscillations (BAO), as well as primary CMB spectra from Planck and SPTPOL. The cosmological constraints based on SPTPOL and Planck lensing band powers are in good agreement when analyzed alone and in combination with Planck full-sky primary CMB data. With weak priors on the baryon density and other parameters, the SPTPOL CMB lensing data alone provide a 4% constraint on $σ_{8}Ω_{m}^{0.25} = 0.593 ± 0.025 0.25$. Jointly fitting with BAO data, we find $σ_{8} = 0.779 ± 0.023, Ω_{m} = 0.368^{+0.032}_{–0.037}$, and $H_{0} = 72.0^{2.1}_{–2.5}$ km s–1 Mpc–1, up to $2σ$ away from the central values preferred by Planck lensing $+$ BAO. However, we recover good agreement between SPTPOL and Planck when restricting the analysis to similar scales. We also consider single-parameter extensions to the flat ΛCDM model. The SPTPOL lensing spectrum constrains the spatial curvature to be $Ω_{K} = -0.0007 ± 0.0025$ and the sum of the neutrino masses to be $Σm_{v} < 0.23$ eV at 95% C.L. (with Planck primary CMB and BAO data), in good agreement with the Planck lensing results. With the differences in the signal-to-noise ratio of the lensing modes and the angular scales covered in the lensing spectra, this analysis represents an important independent check on the full-sky Planck lensing measurement.},
doi = {10.3847/1538-4357/ab6082},
url = {https://www.osti.gov/biblio/1608979},
journal = {The Astrophysical Journal (Online)},
issn = {ISSN 1538-4357},
number = {2},
volume = {888},
place = {United States},
publisher = {Institute of Physics (IOP)},
year = {2020},
month = {01}}
Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
Australian Research Council (ARC); Gordon and Betty Moore Foundation; Kavli Foundation; National Science Foundation (NSF); USDOE Office of Science (SC)
Contributing Organization:
Planck Collaboration
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; AC02-76SF00515
OSTI ID:
1608979
Alternate ID(s):
OSTI ID: 1737599 OSTI ID: 1632183 OSTI ID: 23024613
Journal Information:
The Astrophysical Journal (Online), Journal Name: The Astrophysical Journal (Online) Journal Issue: 2 Vol. 888; ISSN 1538-4357