Combination of cluster number counts and two-point correlations: validation on mock Dark Energy Survey
Year: 2021
Type: article
Abstract: ABSTRACT We present a method of combining cluster abundances and large-scale two-point correlations, namely galaxy clustering, galaxy–cluster cross-correlations, cluster autocorrelations, and cluster lensing. This data vector yields comparable cosmological constraints to traditional analyses that rely on small-scale cluster lensing for mass calibration. We use cosmological survey simulations designed to resemble the Dark Energy Survey Year 1 (DES-Y1) data to validate the analytical covariance matrix and the parameter inferences. The posterior distribution from the analysis of simulations is statistically consistent with the absence of systematic biases detectable at the precision of the DES-Y1 experiment. We compare the χ2 values in simulations to their expectation and find no significant difference. The robustness of our results against a variety of systematic effects is verified using a simulated likelihood analysis of DES-Y1-like data vectors. This work presents the first-ever end-to-end validation of a cluster abundance cosmological analysis on galaxy catalogue level simulations.
Authors: Chun-Hao To, Elisabeth Krause, Eduardo Rozo, Hao-Yi Wu, Daniel Gruen, Joseph DeRose, Eli Rykoff, Risa H Wechsler, Matthew Becker, Matteo Costanzi, Tim Eifler, Maria Elidaiana da Silva Pereira, Nickolas Kokron
Institutions: SLAC National Accelerator Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, University of Arizona, Boise State University, The Ohio State University, University of California, Santa Cruz, University of California, Berkeley, Argonne National Laboratory, Trieste Astronomical Observatory, Institute for Fundamental Physics of the Universe, Brandeis University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: KARMMA: Mass Mapping Worthy of LSST, CONSTRAINING DARK ENERGY WITH GALAXY CLUSTERS AND BARYON ACOUSTIC OSCILLATIONS, Large Scale Structure Probes of Cosmic Acceleration, JOINT ANALYSES OF LENSING, CLUSTERING, AND GALAXY CLUSTERS WITH DES AND LSST, G8267791946, UNIVERSITY OF ARIZONA HIGH ENERGY PHYSICS PROGRAM, G95070906
OpenAlex ID: W3081047237