Dark Energy Survey Year 1 Results: Cosmological constraints from cluster abundances and weak lensing

Journal Article · Tue Jul 07 00:00:00 EDT 2020 · Physical Review D

DOI:https://doi.org/10.1103/physrevd.102.023509· OSTI ID:1614739

Abbott, T. M. C.; Aguena, M.; Alarcon, A.; Allam, S.; Allen, S.; Annis, J.; Avila, S.; Bacon, D.; Bechtol, K.; Bermeo, A.; Bernstein, G. M.; Bertin, E.; Bhargava, S.; Bocquet, S.; Brooks, D.; Brout, D.; Buckley-Geer, E.; Burke, D. L.; Carnero Rosell, A.; Carrasco Kind, M. ; Carretero, J.; Castander, F. J.; Cawthon, R.; Chang, C.; Chen, X.; Choi, A.; Costanzi, M. ; Crocce, M.; da Costa, L. N.; Davis, T. M.; De Vicente, J.; DeRose, J.; Desai, S.; Diehl, H. T.; Dietrich, J. P.; Dodelson, S.; Doel, P.; Drlica-Wagner, A.; Eckert, K.; Eifler, T. F.; Elvin-Poole, J.; Estrada, J.; Everett, S.; Evrard, A. E.; Farahi, A.; Ferrero, I.; Flaugher, B.; Fosalba, P.; Frieman, J.; García-Bellido, J.; Gatti, M.; Gaztanaga, E.; Gerdes, D. W.; Giannantonio, T.; Giles, P.; Grandis, S.; Gruen, D.; Gruendl, R. A.; Gschwend, J.; Gutierrez, G.; Hartley, W. G.; Hinton, S. R.; Hollowood, D. L.; Honscheid, K.; Hoyle, B.; Huterer, D.; James, D. J.; Jarvis, M.; Jeltema, T.; Johnson, M. W. G.; Johnson, M. D.; Kent, S.; Krause, E.; Kron, R.; Kuehn, K.; Kuropatkin, N.; Lahav, O.; Li, T. S.; Lidman, C.; Lima, M.; Lin, H.; MacCrann, N.; Maia, M. A. G.; Mantz, A.; Marshall, J. L.; Martini, P.; Mayers, J.; Melchior, P.; Mena-Fernández, J.; Menanteau, F.; Miquel, R.; Mohr, J. J.; Nichol, R. C.; Nord, B.; Ogando, R. L. C.; Palmese, A.; Paz-Chinchón, F.; Plazas, A. A.; Prat, J.; Rau, M. M.; Romer, A. K.; Roodman, A.; Rooney, P.; Rozo, E.; Rykoff, E. S.; Sako, M.; Samuroff, S.; Sánchez, C.; Sanchez, E.; Saro, A.; Scarpine, V.; Schubnell, M.; Scolnic, D.; Serrano, S.; Sevilla-Noarbe, I.; Sheldon, E.; Smith, J. Allyn.; Smith, M.; Suchyta, E.; Swanson, M. E. C.; Tarle, G.; Thomas, D.; To, C.; Troxel, M. A.; Tucker, D. L.; Varga, T. N.; von der Linden, A.; Walker, A. R.; Wechsler, R. H.; Weller, J.; Wilkinson, R. D.; Wu, H.; Yanny, B.; Zhang, Y.; Zhang, Z.; Zuntz, J.

In this work we perform a joint analysis of the counts and weak lensing signal of redMaPPer clusters selected from the Dark Energy Survey (DES) Year 1 dataset. Our analysis uses the same shear and source photometric redshifts estimates as were used in the DES combined probes analysis. Our analysis results in surprisingly low values for $$S_8 =\sigma_8(\Omega_{\rm m}/0.3)^{0.5}= 0.65\pm 0.04$$, driven by a low matter density parameter, $$\Omega_{\rm m}=0.179^{+0.031}_{-0.038}$$, with $$\sigma_8-\Omega_{\rm m}$$ posteriors in $$2.4\sigma$$ tension with the DES Y1 3x2pt results, and in $$5.6\sigma$$ with the Planck CMB analysis. These results include the impact of post-unblinding changes to the analysis, which did not improve the level of consistency with other data sets compared to the results obtained at the unblinding. The fact that multiple cosmological probes (supernovae, baryon acoustic oscillations, cosmic shear, galaxy clustering and CMB anisotropies), and other galaxy cluster analyses all favor significantly higher matter densities suggests the presence of systematic errors in the data or an incomplete modeling of the relevant physics. Cross checks with X-ray and microwave data, as well as independent constraints on the observable--mass relation from SZ selected clusters, suggest that the discrepancy resides in our modeling of the weak lensing signal rather than the cluster abundance. Repeating our analysis using a higher richness threshold ($$\lambda \ge 30$$) significantly reduces the tension with other probes, and points to one or more richness-dependent effects not captured by our model.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Michigan, Ann Arbor, MI (United States); The Ohio State Univ., Columbus, OH (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
• Contributing Organization: DES Collaboration
• Grant/Contract Number: AC05-00OR22725; AC02-07CH11359; SC0015975; AC02-05CH11231; SC0010118; SC0019193; SC0011726; AC02-76SF00515; FG-2016-6443; SEV-2016-0588; SEV-2016-0597; MDM-2015-0509; FPA2015-68048; ESP2015-66861; AYA2015-71825; AST-1536171; AST-1138766; 291329; 240672; 306478; 716762
• OSTI ID: 1614739
• Alternate ID(s): OSTI ID: 1646810; OSTI ID: 1659581; OSTI ID: 1755595; OSTI ID: 1782847; OSTI ID: 1784718
• Report Number(s): arXiv:2002.11124; FERMILAB-PUB-20-084-AE; DES-2017-0320; oai:inspirehep.net:1782425; TRN: US2106306
• Journal Information: Physical Review D, Vol. 102, Issue 2; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Cosmological parameters
Large scale structure of the Universe
Sky surveys