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Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Correlations

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arxiv 2010.01138 v1 pith:3B5LXK2K submitted 2020-10-02 astro-ph.CO

C. To , E. Krause , E. Rozo , H. Wu , D. Gruen , R. H. Wechsler , T. F. Eifler , E. S. Rykoff
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M. Costanzi M. R. Becker G. M. Bernstein J. Blazek S. Bocquet S. L. Bridle R. Cawthon A. Choi M. Crocce C. Davis J. DeRose A. Drlica-Wagner J. Elvin-Poole X. Fang A. Farahi O. Friedrich M. Gatti E. Gaztanaga T. Giannantonio W. G. Hartley B. Hoyle M. Jarvis N. MacCrann T. McClintock V. Miranda M. E. S. Pereira Y. Park A. Porredon J. Prat M. M. Rau A. J. Ross S. Samuroff C. Sánchez I. Sevilla-Noarbe E. Sheldon M. A. Troxel T. N. Varga P. Vielzeuf Y. Zhang J. Zuntz T. M. C. Abbott M. Aguena J. Annis S. Avila E. Bertin S. Bhargava D. Brooks D. L. Burke A. Carnero Rosell M. Carrasco Kind J. Carretero C. Chang C. Conselice L. N. da Costa T. M. Davis S. Desai H. T. Diehl J. P. Dietrich S. Everett A. E. Evrard I. Ferrero B. Flaugher P. Fosalba J. Frieman J. García-Bellido R. A. Gruendl G. Gutierrez S. R. Hinton D. L. Hollowood D. Huterer D. J. James T. Jeltema R. Kron K. Kuehn N. Kuropatkin M. Lima M. A. G. Maia J. L. Marshall F. Menanteau R. Miquel R. Morgan J. Muir J. Myles A. Palmese F. Paz-Chinchón A. A. Plazas A. K. Romer A. Roodman E. Sanchez B. Santiago V. Scarpine S. Serrano M. Smith E. Suchyta M. E. C. Swanson G. Tarle D. Thomas D. L. Tucker J. Weller W. Wester (DES Collaboration)
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keywords clusterabundancesconstraintscorrelationsgalaxyanalysiscosmologicaldensity
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abstract

Combining multiple observational probes is a powerful technique to provide robust and precise constraints on cosmological parameters. In this letter, we present the first joint analysis of cluster abundances and auto/cross correlations of three cosmic tracer fields measured from the first year data of the Dark Energy Survey: galaxy density, weak gravitational lensing shear, and cluster density split by optical richness. From a joint analysis of cluster abundances, three cluster cross-correlations, and auto correlations of galaxy density, we obtain $\Omega_{\rm{m}}=0.305^{+0.055}_{-0.038}$ and $\sigma_8=0.783^{+0.064}_{-0.054}$. This result is consistent with constraints from the DES-Y1 galaxy clustering and weak lensing two-point correlation functions for the flat $\nu\Lambda$CDM model. We thus combine cluster abundances and all two-point correlations from three cosmic tracer fields and find improved constraints on cosmological parameters as well as on the cluster observable--mass scaling relation. This analysis is an important advance in both optical cluster cosmology and multi-probe analyses of upcoming wide imaging surveys.

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Cited by 2 Pith papers

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

    astro-ph.CO 2024-12 conditional novelty 6.0 of 10

    Combining SPT cluster counts with DES galaxy clustering and weak lensing yields Ωm=0.300±0.017, σ8=0.797±0.026, and S8=0.796±0.013, 1.6σ below Planck, with a ∑mν<0.25 eV limit when combined with Planck.

  2. Cosmology with Galaxy Clusters

    astro-ph.CO 2025-05 unverdicted

    A review of galaxy cluster cosmology that summarizes detection, mass calibration, and current Omega_m and sigma_8 constraints without presenting new results.

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