Multiprobe Cosmology from the Abundance of SPT Clusters and DES Galaxy Clustering and Weak Lensing

• Published in: arXiv.org 2024-12
• Main Authors: Bocquet, S, Grandis, S, Bleem, L E, Alarcon, A, Andrade-Oliveira, F, Bechtol, K, Campos, A, A Carnero Rosell, M Carrasco Kind, Cawthon, R, Chang, C, Choi, A, Crocce, M, Diehl, H T, Doux, C, Drlica-Wagner, A, Elsner, F, Elvin-Poole, J, Fang, X, Ferté, A, Fosalba, P, Frieman, J, Giannini, G, Gruen, D, Harrison, I, Kuropatkin, N, MacCrann, N, McCullough, J, Park, Y, Raveri, M, Roodman, A, Rosenfeld, R, Sánchez, C, Secco, L F, Tutusaus, I, Weaverdyck, N, Zhang, Y, Zuntz, J, Abbott, T M C, Allen, S W, Beall, J A, Bender, A N, Benson, B A, Bianchini, F, Bryant, L, Burke, D L, Carlstrom, J E, Castander, F J, Chang, C L, Chaubal, P, Citron, R, Costanzi, M, Crawford, T M, Crites, A T, Pereira, M E S, de Haan, T, Dobbs, M A, Farahi, A, Flaugher, B, Gallicchio, J, George, E M, Hinton, S R, Hlavacek-Larrondo, J, Holder, G P, Hollowood, D L, Holzapfel, W L, Hrubes, J D, Hubmayr, J, Kéruzoré, F, Khullar, G, Kim, K, Lahav, O, Lee, S, D Li, Lima, M, Mantz, A, Marshall, J L, Meyer, S S, Miquel, R, Montgomery, J, Noble, G I, Novosad, V, Pryke, C, Reichardt, C L, Ruhl, J E, Saliwanchik, B R, Salvati, L, Saro, A, Schaffer, K K, Sommer, M, Stalder, B, Stark, A A, Swanson, M E C, Tarle, G, Thomas, D, Tucker, C, Whitehorn, N, Wu, W L K, Yefremenko, V, Collaboration, DES
• Format: Article
• Language: English
• Subjects: Astronomical models; Cluster analysis; Clustering; Constraints; Cosmological constant; Cosmology; Cross correlation; Dark energy; Equations of state; Galactic halos; Galaxies; Large scale structure of the universe; Neutrinos; Parameters; Position measurement; Sky surveys (astronomy); South Pole
• ISSN: 2331-8422

Cosmic shear, galaxy clustering, and the abundance of massive halos each probe the large-scale structure of the universe in complementary ways. We present cosmological constraints from the joint analysis of the three probes, building on the latest analyses of the lensing-informed abundance of clusters identified by the South Pole Telescope (SPT) and of the auto- and cross-correlation of galaxy position and weak lensing measurements (3\(\times\)2pt) in the Dark Energy Survey (DES). We consider the cosmological correlation between the different tracers and we account for the systematic uncertainties that are shared between the large-scale lensing correlation functions and the small-scale lensing-based cluster mass calibration. Marginalized over the remaining \(\Lambda\)CDM parameters (including the sum of neutrino masses) and 52 astrophysical modeling parameters, we measure \(\Omega_\mathrm{m}=0.300\pm0.017\) and \(\sigma_8=0.797\pm0.026\). Compared to constraints from Planck primary CMB anisotropies, our constraints are only 15% wider with a probability to exceed of 0.22 (\(1.2\sigma\)) for the two-parameter difference. We further obtain \(S_8\equiv\sigma_8(\Omega_\mathrm{m}/0.3)^{0.5}=0.796\pm0.013\) which is lower than the Planck measurement at the \(1.6\sigma\) level. The combined SPT cluster, DES 3\(\times\)2pt, and Planck datasets mildly prefer a non-zero positive neutrino mass, with a 95% upper limit \(\sum m_\nu