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 () 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 and . This result is consistent with constraints from the DES-Y1 galaxy clustering and weak lensing two-point correlation functions for the flat model. Consequently, we combine cluster abundances and all two-point correlations from across all 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 multiprobe analyses of upcoming wide imaging surveys.
- Received 6 October 2020
- Revised 7 January 2021
- Accepted 23 February 2021
DOI:https://doi.org/10.1103/PhysRevLett.126.141301
© 2021 American Physical Society
Physics Subject Headings (PhySH)
synopsis
A New View of the Universe’s Dark Side
Published 6 April 2021
The Dark Energy Survey Collaboration has updated a model of the Universe to correctly capture more galaxy measurements.
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