학술논문
Measurements of the E-Mode Polarization and Temperature-E-Mode Correlation of the CMB from SPT-3G 2018 Data
Document Type
Working Paper
Author
Dutcher, D.; Balkenhol, L.; Ade, P. A. R.; Ahmed, Z.; Anderes, E.; Anderson, A. J.; Archipley, M.; Avva, J. S.; Aylor, K.; Barry, P. S.; Thakur, R. Basu; Benabed, K.; Bender, A. N.; Benson, B. A.; Bianchini, F.; Bleem, L. E.; Bouchet, F. R.; Bryant, L.; Byrum, K.; Carlstrom, J. E.; Carter, F. W.; Cecil, T. W.; Chang, C. L.; Chaubal, P.; Chen, G.; Cho, H. -M.; Chou, T. -L.; Cliche, J. -F.; Crawford, T. M.; Cukierman, A.; Daley, C.; de Haan, T.; Denison, E. V.; Dibert, K.; Ding, J.; Dobbs, M. A.; Everett, W.; Feng, C.; Ferguson, K. R.; Foster, A.; Fu, J.; Galli, S.; Gambrel, A. E.; Gardner, R. W.; Goeckner-Wald, N.; Gualtieri, R.; Guns, S.; Gupta, N.; Guyser, R.; Halverson, N. W.; Harke-Hosemann, A. H.; Harrington, N. L.; Henning, J. W.; Hilton, G. C.; Hivon, E.; Holder, G. P.; Holzapfel, W. L.; Hood, J. C.; Howe, D.; Huang, N.; Irwin, K. D.; Jeong, O. B.; Jonas, M.; Jones, A.; Khaire, T. S.; Knox, L.; Kofman, A. M.; Korman, M.; Kubik, D. L.; Kuhlmann, S.; Kuo, C. -L.; Lee, A. T.; Leitch, E. M.; Lowitz, A. E.; Lu, C.; Meyer, S. S.; Michalik, D.; Millea, M.; Montgomery, J.; Nadolski, A.; Natoli, T.; Nguyen, H.; Noble, G. I.; Novosad, V.; Omori, Y.; Padin, S.; Pan, Z.; Paschos, P.; Pearson, J.; Posada, C. M.; Prabhu, K.; Quan, W.; Raghunathan, S.; Rahlin, A.; Reichardt, C. L.; Riebel, D.; Riedel, B.; Rouble, M.; Ruhl, J. E.; Sayre, J. T.; Schiappucci, E.; Shirokoff, E.; Smecher, G.; Sobrin, J. A.; Stark, A. A.; Stephen, J.; Story, K. T.; Suzuki, A.; Thompson, K. L.; Thorne, B.; Tucker, C.; Umilta, C.; Vale, L. R.; Vanderlinde, K.; Vieira, J. D.; Wang, G.; Whitehorn, N.; Wu, W. L. K.; Yefremenko, V.; Yoon, K. W.; Young, M. R.
Source
Phys. Rev. D 104, 022003 (2021)
Subject
Language
Abstract
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 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 $300 \le \ell < 3000$, 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 $300 \le \ell \le 1400$ for $EE$ and $300 \le \ell \le 1700$ for $TE$, resulting in constraints on cosmological parameters comparable to those from other current leading ground-based experiments. We find that the SPT-3G dataset is well-fit by a $\Lambda$CDM cosmological model with parameter constraints consistent with those from Planck and SPTpol data. From SPT-3G data alone, we find $H_0 = 68.8 \pm 1.5 \mathrm{km\,s^{-1}\,Mpc^{-1}}$ and $\sigma_8 = 0.789 \pm 0.016$, with a gravitational lensing amplitude consistent with the $\Lambda$CDM prediction ($A_L = 0.98 \pm 0.12$). We combine the SPT-3G and the Planck datasets and obtain joint constraints on the $\Lambda$CDM model. The volume of the 68% confidence region in six-dimensional $\Lambda$CDM parameter space is reduced by a factor of 1.5 compared to Planck-only constraints, with only slight 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.