Dark Energy Survey Year 1 results : cosmological constraints from cluster abundances, weak lensing, and galaxy correlations
dc.contributor.author | To, Chun-Hao | pt_BR |
dc.contributor.author | Santiago, Basilio Xavier | pt_BR |
dc.contributor.author | DES Collaboration | pt_BR |
dc.date.accessioned | 2021-06-25T04:24:40Z | pt_BR |
dc.date.issued | 2021 | pt_BR |
dc.identifier.issn | 0031-9007 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/222835 | pt_BR |
dc.description.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 × 2pt þ 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 Ωm ¼ 0.305þ0.055 −0.038 and σ8 ¼ 0.783þ0.064 −0.054 . This result is consistent with constraints from the DES-Y1 galaxy clustering and weak lensing two-point correlation functions for the flat νΛCDM model. Consequently, we combine cluster abundances and all two-point correlations from across all three cosmic tracer fields (6 × 2pt þ 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. | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review letters. Melville. Vol. 126, no. 14 (Apr. 2021), 141301, 8 p. | pt_BR |
dc.rights | Open Access | en |
dc.subject | Aglomerados de galaxias | pt_BR |
dc.subject | Lentes gravitacionais | pt_BR |
dc.subject | Catalogos astronomicos | pt_BR |
dc.title | Dark Energy Survey Year 1 results : cosmological constraints from cluster abundances, weak lensing, and galaxy correlations | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 001127208 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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