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

To, C.; Krause, E.; Rozo, E.; Wu, H.; Gruen, D.; Wechsler, R. H.; Eifler, T. F.; Rykoff, E. S.; Costanzi, M.; Becker, M. R.; Bernstein, G. M.; Blazek, J.; Bocquet, S.; Bridle, S. L.; Cawthon, R.; Choi, A.; Crocce, M.; Davis, C.; DeRose, J.; Drlica-Wagner, A.; Elvin-Poole, J.; Fang, X.; Farahi, A.; Friedrich, O.; Gatti, M.; Gaztanaga, E.; Giannantonio, T.; Hartley, W. G.; Hoyle, B.; Jarvis, M.; MacCrann, N.; McClintock, T.; Miranda, V.; Pereira, M. E. S.; Park, Y.; Porredon, A.; Prat, J.; Rau, M. M.; Ross, A. J.; Samuroff, S.; Sanchez, C.; Sevilla-Noarbe, I.; Sheldon, E.; Troxel, M. A.; Varga, T. N.; Vielzeuf, P.; Zhang, Y.; Zuntz, J.; Abbott, T. M. C.; Aguena, M.; Amon, A.; Annis, J.; Avila, S.; Bertin, E.; Bhargava, S.; Brooks, D.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M.; Carretero, J.; Chang, C.; Conselice, C.; da Costa, L. N.; Davis, T. M.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Everett, S.; Evrard, A. E.; Ferrero, I.; Flaugher, B.; Fosalba, P.; Frieman, J.; Garcia-Bellido, J.; Gruendl, R. A.; Gutierrez, G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; Huterer, D.; James, D. J.; Jeltema, T.; Kron, R.; Kuehn, K.; Kuropatkin, N.; Lima, M.; Maia, M. A. G.; Marshall, J. L.; Menanteau, F.; Miquel, R.; Morgan, R.; Muir, J.; Myles, J.; Palmese, A.; Paz-Chinchon, F.; Plazas, A. A.; Romer, A. K.; Roodman, A.; Sanchez, E.; Santiago, B.; Scarpine, V.; Serrano, S.; Smith, M.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thomas, D.; Tucker, D. L.; Weller, Jochen ; Wester, W. and Wilkinson, R. D. (2021): Dark Energy Survey Year 1 Results: Cosmological Constraints from Cluster Abundances, Weak Lensing, and Galaxy Correlations. In: Physical Review Letters, Vol. 126, No. 14, 141301

Abstract

We present the first joint analysis of cluster abundances and auto or cross-correlations of three cosmic tracer fields: galaxy density, weak gravitational lensing shear, and cluster density split by optical richness. From a joint analysis (4 x 2pt + N) of cluster abundances, three cluster cross-correlations, and the auto correlations of the galaxy density measured from the first year data of the Dark Energy Survey, we obtain Omega m = 0.305(-0.038)(+0.055) and sigma g = 0.783(-0.054)(+0.064) This result is consistent with constraints from the DES-Yl galaxy clustering and weak lensing two-point correlation functions for the flat nu ACDM model. Consequently, we combine cluster abundances and all two-point correlations from across all three cosmic tracer fields (6 x 2pt + N) 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 multiprobe analyses of upcoming wide imaging surveys.

• Item Type: Journal article
• Faculties: Physics > Astronomy and astrophysics, cosmology
• Subjects: 500 Science > 530 Physics
• ISSN: 0031-9007
• Language: English