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Measurements of the E -mode polarization and temperature- E -mode correlation of the CMB from SPT-3G 2018 data

2021; American Physical Society; Volume: 104; Issue: 2 Linguagem: Inglês

10.1103/physrevd.104.022003

2470-0037

Daniel Dutcher, L. Balkenhol, P. A. R. Ade, Zeeshan Ahmed, Ethan Anderes, A. J. Anderson, M. Archipley, J. S. Avva, K. Aylor, P. S. Barry, R. Basu Thakur, K. Benabed, A. N. Bender, B. A. Benson, F. Bianchini, L. E. Bleem, F. R. Bouchet, Lincoln Bryant, K. Byrum, J. E. Carlstrom, F. W. Carter, T. W. Cecil, C. L. Chang, P. Chaubal, G. Chen, H.-M. Cho, T.-L. Chou, J.-F. Cliche, T. M. Crawford, A. Cukierman, C. Daley, T. de Haan, E. V. Denison, K. R. Dibert, J. Ding, M. Dobbs, W. Everett, C. Feng, K. R. Ferguson, A. Foster, J. Fu, S. Galli, A. E. Gambrel, R. W. Gardner, N. Goeckner-Wald, R. Gualtieri, S. Guns, N. Gupta, R. Guyser, N. W. Halverson, A. H. Harke-Hosemann, N. L. Harrington, J. W. Henning, Gene C. Hilton, E. Hivon, G. P. Holder, W. L. Holzapfel, J. C. Hood, D. Howe, N. Huang, K. D. Irwin, O. B. Jeong, M. Jonas, A. Jones, T. S. Khaire, L. Knox, Anna M. Kofman, M. Korman, D. L. Kubik, S. Kuhlmann, C.-L. Kuo, A. T. Lee, E. M. Leitch, A. E. Lowitz, C. Lu, S. S. Meyer, D. Michalik, M. Millea, J. Montgomery, A. Nadolski, T. Natoli, H. Nguyen, G. I. Noble, V. Novosad, Y. Omori, S. Padin, Z. Pan, P. Paschos, John E. Pearson, C. M. Posada, K. Prabhu, Wei Quan, S. Raghunathan, A. S. Rahlin, C. L. Reichardt, D. Riebel, Benedikt Riedel, M. Rouble, J. E. Ruhl, J. T. Sayre, E. Schiappucci, E. Shirokoff, G. Smecher, J. A. Sobrin, A. A. Stark, J. Stephen, K. T. Story, A. Suzuki, K. L. Thompson, B. Thorne, C. Tucker, C. Umiltà, L. R. Vale, K. Vanderlinde, J. D. Vieira, G. Wang, N. Whitehorn, W. L. K. Wu, V. Yefremenko, K. W. Yoon, M. R. Young,

Particle physics theoretical and experimental studies

We present measurements of the $E$-mode ($EE$) polarization power spectrum and temperature-$E$-mode ($TE$) cross-power spectrum of the cosmic microwave background using data collected by SPT-3G, the latest instrument installed on the South Pole Telescope. This analysis uses observations of a $1500\text{ }\text{ }{\mathrm{deg}}^{2}$ region at 95, 150, and 220 GHz taken over a four-month period in 2018. We report binned values of the $EE$ and $TE$ power spectra over the angular multipole range $300\ensuremath{\le}\ensuremath{\ell}<3000$, using the multifrequency data to construct six semi-independent estimates of each power spectrum and their minimum-variance combination. These measurements improve upon the previous results of SPTpol across the multipole ranges $300\ensuremath{\le}\ensuremath{\ell}\ensuremath{\le}1400$ for $EE$ and $300\ensuremath{\le}\ensuremath{\ell}\ensuremath{\le}1700$ for $TE$, resulting in constraints on cosmological parameters comparable to those from other current leading ground-based experiments. We find that the SPT-3G data set is well fit by a $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ cosmological model with parameter constraints consistent with those from Planck and SPTpol data. From SPT-3G data alone, we find ${H}_{0}=68.8\ifmmode\pm\else\textpm\fi{}1.5\text{ }\text{ }\mathrm{km}\text{ }{\mathrm{s}}^{\ensuremath{-}1}\text{ }{\mathrm{Mpc}}^{\ensuremath{-}1}$ and ${\ensuremath{\sigma}}_{8}=0.789\ifmmode\pm\else\textpm\fi{}0.016$, with a gravitational lensing amplitude consistent with the $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ prediction (${A}_{L}=0.98\ifmmode\pm\else\textpm\fi{}0.12$). We combine the SPT-3G and the Planck data sets and obtain joint constraints on the $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ model. The volume of the 68% confidence region in six-dimensional $\mathrm{\ensuremath{\Lambda}}\mathrm{CDM}$ parameter space is reduced by a factor of 1.5 compared to Planck-only constraints, with no significant shifts in central values. We note that the results presented here are obtained from data collected during just half of a typical observing season with only part of the focal plane operable, and that the active detector count has since nearly doubled for observations made with SPT-3G after 2018.