Cosmology From CMB Lensing and Delensed EE Power Spectra Using 2019-2020 SPT-3G Polarization Data

From CMB polarization data alone we reconstruct the CMB lensing power spectrum, comparable in overall constraining power to previous temperature-based reconstructions, and an unlensed E-mode power spectrum. The observations, taken in 2019 and 2020 with the South Pole Telescope (SPT) and the SPT-3G camera, cover 1500 deg$^2$ at 95, 150, and 220 GHz with arcminute resolution and roughly 4.9$\mu$K-arcmin coadded noise in polarization. The power spectrum estimates, together with systematic parameter estimates and a joint covariance matrix, follow from a Bayesian analysis using the Marginal Unbiased Score Expansion (MUSE) method. The E-mode spectrum at $\ell>2000$ and lensing spectrum at $L>350$ are the most precise to date. Assuming the $\Lambda$CDM model, and using only these SPT data and priors on $\tau$ and absolute calibration from Planck, we find $H_0=66.81\pm0.81$ km/s/Mpc, comparable in precision to the Planck determination and in 5.4$\sigma$ tension with the most precise $H_0$ inference derived via the distance ladder. We also find $S_8=0.850\pm0.017$, providing further independent evidence of a slight tension with low-redshift structure probes. The $\Lambda$CDM model provides a good simultaneous fit to the combined Planck, ACT, and SPT data, and thus passes a powerful test. Combining these CMB datasets with BAO observations, we find that the effective number of neutrino species, spatial curvature, and primordial helium fraction are consistent with standard model values, and that the 95% confidence upper limit on the neutrino mass sum is 0.075 eV. The SPT data are consistent with the somewhat weak preference for excess lensing power seen in Planck and ACT data relative to predictions of the $\Lambda$CDM model. We also detect at greater than 3$\sigma$ the influence of non-linear evolution in the CMB lensing power spectrum and discuss it in the context of the $S_8$ tension.(abridged)

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Journal
arXiv (Cornell University)
Published
2024-11-08
DOI
https://doi.org/10.1103/physrevd.111.083534
Citations
2
Primary Topic
Astrophysics and Cosmic Phenomena
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article
Field-Weighted Citation Impact
1.32
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article

Cosmology From CMB Lensing and Delensed EE Power Spectra Using 2019-2020 SPT-3G Polarization Data

Chunyu Lu, T. Natoli, K. Fichman, E. Hivon et al.
2 citations
arXiv (Cornell University)
Astrophysics and Cosmic Phenomena
1.32
article

Cosmology From CMB Lensing and Delensed EE Power Spectra Using 2019-2020 SPT-3G Polarization Data

Chunyu Lu, T. Natoli, K. Fichman, E. Hivon, N. W. Halverson, N. Whitehorn, Karen Lévy, L. Balkenhol, P. Chaubal, E. Schiappucci, Abhishek S. Maniyar, G. Chen, A. Coerver, S. Guns, C. L. Reichardt, F. Kéruzoré, M. Rouble, J. E. Carlstrom, A. J. Anderson, D. Riebel, F. Guidi, B. Ansarinejad, K. R. Dibert, P. Paschos, M. R. Young, M. Rahimi, J. D. Vieira, L. Bryant, T.-L. Chou, C. Tandoi, Ethan Anderes, M. Millea, A. T. Lee, J. A. Sobrin, B. A. Benson, M. Korman, M. Archipley, Y. Wan, L. E. Bleem, C. Umilta, Kedar A. Phadke, K. R. Ferguson, G. P. Holder, Z. Pan, A. N. Bender, F. R. Bouchet, C. Chang, J. E. Ruhl, R. W. Gardner, A. Foster, Chang Feng, P. M. Chichura, K. Prabhu, J. B. Stephen, R. Gualtieri, T. M. Crawford, C. Daley, Cynthia Trendafilova, N. Goeckner-Wald, J. Montgomery, D. Dutcher, J. C. Hood, Y. Omori, C.-L. Kuo, N. Huang, F. Bianchini, B. Thorne, Y. Nakato, W. L. Holzapfel, F. Menanteau, G. I. Noble, M. Dobbs, A. Hryciuk, A. E. Gambrel, A. Rahlin, Alexander W. Pollak, D. Howe, Arati Chokshi, Alexandre Doussot, A. A. Stark, W. L. K. Wu, E. Camphuis, J. A. Zebrowski, K. Kornoelje, A. Vitrier, S. Galli, Fan Ge, K. Benabed, A. E. Lowitz, T. de Haan, W. Everett, Wei Quan, L. Knox, A. R. Khalife, E. S. Martsen, M. Doohan
article en
2 citations

Abstract

From CMB polarization data alone we reconstruct the CMB lensing power spectrum, comparable in overall constraining power to previous temperature-based reconstructions, and an unlensed E-mode power spectrum. The observations, taken in 2019 and 2020 with the South Pole Telescope (SPT) and the SPT-3G camera, cover 1500 deg$^2$ at 95, 150, and 220 GHz with arcminute resolution and roughly 4.9$\mu$K-arcmin coadded noise in polarization. The power spectrum estimates, together with systematic parameter estimates and a joint covariance matrix, follow from a Bayesian analysis using the Marginal Unbiased Score Expansion (MUSE) method. The E-mode spectrum at $\ell>2000$ and lensing spectrum at $L>350$ are the most precise to date. Assuming the $\Lambda$CDM model, and using only these SPT data and priors on $\tau$ and absolute calibration from Planck, we find $H_0=66.81\pm0.81$ km/s/Mpc, comparable in precision to the Planck determination and in 5.4$\sigma$ tension with the most precise $H_0$ inference derived via the distance ladder. We also find $S_8=0.850\pm0.017$, providing further independent evidence of a slight tension with low-redshift structure probes. The $\Lambda$CDM model provides a good simultaneous fit to the combined Planck, ACT, and SPT data, and thus passes a powerful test. Combining these CMB datasets with BAO observations, we find that the effective number of neutrino species, spatial curvature, and primordial helium fraction are consistent with standard model values, and that the 95% confidence upper limit on the neutrino mass sum is 0.075 eV. The SPT data are consistent with the somewhat weak preference for excess lensing power seen in Planck and ACT data relative to predictions of the $\Lambda$CDM model. We also detect at greater than 3$\sigma$ the influence of non-linear evolution in the CMB lensing power spectrum and discuss it in the context of the $S_8$ tension.(abridged)

arXiv (Cornell University)
Canadian Institute for Advanced Research (CA), Argonne National Laboratory (US), Fermi National Accelerator Laboratory (US), Harvard University (US), High Energy Accelerator Research Organization (JP), Urbana University (US), Institut d'Astrophysique de Paris (FR), University of Illinois System (US), University of Colorado System (US), Kavli Institute for Particle Astrophysics and Cosmology (US), Electronics for Imaging (United States) (US), Menlo School (US), Northwestern University (PH), Astrobiology Center (JP), Melbourne Health (AU), McGill University (CA), Case Western Reserve University (US), University of California, Davis (US), Michigan State University (US), Netherlands Institute for Radio Astronomy (NL), University of California, Berkeley (US)
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