학술논문
Testing the $\mathbf{\Lambda}$CDM Cosmological Model with Forthcoming Measurements of the Cosmic Microwave Background with SPT-3G
Document Type
Working Paper
Author
Prabhu, K.; Raghunathan, S.; Millea, M.; Lynch, G.; Ade, P. A. R.; Anderes, E.; Anderson, A. J.; Ansarinejad, B.; Archipley, M.; Balkenhol, L.; Benabed, K.; Bender, A. N.; Benson, B. A.; Bianchini, F.; Bleem, L. E.; Bouchet, F. R.; Bryant, L.; Camphuis, E.; Carlstrom, J. E.; Cecil, T. W.; Chang, C. L.; Chaubal, P.; Chichura, P. M.; Chou, T. -L.; Coerver, A.; Crawford, T. M.; Cukierman, A.; Daley, C.; de Haan, T.; Dibert, K. R.; Dobbs, M. A.; Doussot, A.; Dutcher, D.; Everett, W.; Feng, C.; Ferguson, K. R.; Fichman, K.; Foster, A.; Galli, S.; Gambrel, A. E.; Gardner, R. W.; Ge, F.; Goeckner-Wald, N.; Gualtieri, R.; Guidi, F.; Guns, S.; Halverson, N. W.; Hivon, E.; Holder, G. P.; Holzapfel, W. L.; Hood, J. C.; Hryciuk, A.; Huang, N.; Kéruzoré, F.; Knox, L.; Korman, M.; Kornoelje, K.; Kuo, C. -L.; Lee, A. T.; Levy, K.; Lowitz, A. E.; Lu, C.; Maniyar, A.; Menanteau, F.; Montgomery, J.; Nakato, Y.; Natoli, T.; Noble, G. I.; Novosad, V.; Omori, Y.; Padin, S.; Pan, Z.; Paschos, P.; Phadke, K. A.; Quan, W.; Rahimi, M.; Rahlin, A.; Reichardt, C. L.; Rouble, M.; Ruhl, J. E.; Schiappucci, E.; Smecher, G.; Sobrin, J. A.; Stark, A. A.; Stephen, J.; Suzuki, A.; Tandoi, C.; Thompson, K. L.; Thorne, B.; Trendafilova, C.; Tucker, C.; Umilta, C.; Vitrier, A.; Vieira, J. D.; Wan, Y.; Wang, G.; Whitehorn, N.; Wu, W. L. K.; Yefremenko, V.; Young, M. R.; Zebrowski, J. A.
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Subject
Language
Abstract
We forecast constraints on cosmological parameters enabled by three surveys conducted with SPT-3G, the third-generation camera on the South Pole Telescope. The surveys cover separate regions of 1500, 2650, and 6000 ${\rm deg}^{2}$ to different depths, in total observing 25% of the sky. These regions will be measured to white noise levels of roughly 2.5, 9, and 12 $\mu{\rm K-arcmin}$, respectively, in CMB temperature units at 150 GHz by the end of 2024. The survey also includes measurements at 95 and 220 GHz, which have noise levels a factor of ~1.2 and 3.5 times higher than 150 GHz, respectively, with each band having a polarization noise level ~$\sqrt{\text{2}}$ times higher than the temperature noise. We use a novel approach to obtain the covariance matrices for jointly and optimally estimated gravitational lensing potential bandpowers and unlensed CMB temperature and polarization bandpowers. We demonstrate the ability to test the $\Lambda{\rm CDM}$ model via the consistency of cosmological parameters constrained independently from SPT-3G and Planck data, and consider the improvement in constraints on $\Lambda{\rm CDM}$ extension parameters from a joint analysis of SPT-3G and Planck data. The $\Lambda{\rm CDM}$ cosmological parameters are typically constrained with uncertainties up to ~2 times smaller with SPT-3G data, compared to Planck, with the two data sets measuring significantly different angular scales and polarization levels, providing additional tests of the standard cosmological model.
Comment: 26 pages; 13 figures; to be submitted to ApJ; comments welcome
Comment: 26 pages; 13 figures; to be submitted to ApJ; comments welcome