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Dark Energy Survey Y1 - K Romer.pdf (5.9 MB)

Dark Energy Survey year 1 results: cosmological constraints from cluster abundances, weak lensing, and galaxy correlations

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journal contribution
posted on 2023-06-10, 00:47 authored by C To, E Krause, E Rozo, H Wu, D Gruen, R H Wechsler, T F Eifler, E S Rykoff, M Costanzi, M R Becker, G M Bernstein, J Blazek, S Bocquet, Sunayana Bhargava, Kathy RomerKathy Romer, DES Collaboration, others
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+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 ?m=0.305-0.038+0.055 and s8=0.783-0.054+0.064. This result is consistent with constraints from the DES-Y1 galaxy clustering and weak lensing two-point correlation functions for the flat ??CDM model. Consequently, we combine cluster abundances and all two-point correlations from across all three cosmic tracer fields (6×2pt+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.

History

Publication status

  • Published

File Version

  • Accepted version

Journal

Physical Review Letters

ISSN

0031-9007

Publisher

American Physical Society

Issue

14

Volume

126

Article number

a141301

Event location

United States

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2021-08-31

First Open Access (FOA) Date

2021-08-31

First Compliant Deposit (FCD) Date

2021-08-27

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