• DOI:10.3847/1538-4357/ab6082
• Corpus ID: 204734555

Constraints on Cosmological Parameters from the 500 deg2 SPTPOL Lensing Power Spectrum

@article{Bianchini2019ConstraintsOC,
  title={Constraints on Cosmological Parameters from the 500 deg2 SPTPOL Lensing Power Spectrum},
  author={Federico Bianchini and W. L. Kimmy Wu and Peter A. R. Ade and A. J. Anderson and Jason E. Austermann and J. S. Avva and J. A. Beall and Amy N. Bender and Bradford A. Benson and Lindsey E. Bleem and John E. Carlstrom and C. L. Chang and Prakrut Chaubal and H. C. Chiang and Robert I. Citron and Christine Corbett Moran and Thomas M. Crawford and Abigail Crites and T. de Haan and M. A. Dobbs and Wendeline B. Everett and Jason Richard Gallicchio and E. M. George and Adam J. Gilbert and N. Gupta and Nils W. Halverson and Nicholas Lee Harrington and Jason W. Henning and G. C. Hilton and Gilbert P. Holder and William L. Holzapfel and Jan Hrube{\vs} and Nicholas Huang and J. Hubmayr and Kent D. Irwin and Lloyd Knox and A. T. Lee and D. Li and A. E. Lowitz and Alessandro Manzotti and Jeff J. McMahon and Stephan S. Meyer and Marius Millea and L. M. Mocanu and J. Montgomery and Andrew Nadolski and Tyler J. Natoli and John P. Nibarger and Gavin I. Noble and Valentyn Novosad and Yuuki Omori and Stephen Padin and Sanjaykumar Patil and Clement L Pryke and Christian L. Reichardt and John E. Ruhl and Benjamin R. B. Saliwanchik and J. T. Sayre and K. K. Schaffer and Charlie Sievers and Gabrielle Simard and Graeme Smecher and Antony A. Stark and K. T. Story and C E Tucker and Keith Vanderlinde and Todd J. Veach and Joaquin D. Vieira and G. Wang and Nathan Whitehorn and Volodymyr Yefremenko},
  journal={The Astrophysical Journal},
  year={2019},
  volume={888}
}

• F. Bianchini, W. L. K. Wu, +68 authors V. Yefremenko
• Published 16 October 2019
• Physics
• The Astrophysical Journal

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 . Jointly fitting with BAO data, we find , , and , up to 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 and the sum of the neutrino masses to be 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.