1. Measurements of the E-Mode Polarization and Temperature-E-Mode Correlation of the CMB from SPT-3G 2018 Data
- Author
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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., Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and SPT-3G
- Subjects
dimension: 6 ,satellite: Planck ,Cosmology and Nongalactic Astrophysics (astro-ph.CO) ,pole ,cosmic background radiation: spectrum ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,gravitation: lens ,cosmological model: parameter space ,correlation ,cosmic background radiation: multipole ,polarization: power spectrum ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Astrophysics - Cosmology and Nongalactic Astrophysics - Abstract
International audience; 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 deg2 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≤ℓ<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≤ℓ≤1400 for EE and 300≤ℓ≤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 ΛCDM cosmological model with parameter constraints consistent with those from Planck and SPTpol data. From SPT-3G data alone, we find H0=68.8±1.5 km s−1 Mpc−1 and σ8=0.789±0.016, with a gravitational lensing amplitude consistent with the ΛCDM prediction (AL=0.98±0.12). We combine the SPT-3G and the Planck data sets and obtain joint constraints on the ΛCDM model. The volume of the 68% confidence region in six-dimensional ΛCDM 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.
- Published
- 2021
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