SIMBAD references

Aims. We analysed the clustering of a photometric sample of galaxy clusters selected from the Third Data Release of the Kilo-Degree Survey, focusing on the redshift-space two-point correlation function (2PCF). We compared our measurements to theoretical predictions of the standard Λ cold dark matter (ΛCDM) cosmological model.
Methods. We measured the 2PCF of the sample in the cluster-centric radial range r ∈ [5, 80] h^–1 Mpc, considering 4934 galaxy clusters with richness λ^* ≥ 15 in the redshift range z ∈ [0.1, 0.6]. A Markov chain Monte Carlo analysis has been performed to constrain the cosmological parameters Ω_m, σ₈, and S₈ ≡ σ₈(Ω_m/0.3)^0.5, assuming Gaussian priors on the mass-richness relation given by the posteriors obtained from a joint analysis of cluster counts and weak lensing. In addition, we constrained the normalisation of the mass-richness relation, α, with fixed cosmological parameters.
Results. We obtained Ω_m = 0.28^+0.05_–0.04, σ₈ = 0.82^+0.14_–0.12, and S₈ = 0.80^+0.08_–0.08. The constraint on S₈ is consistent within 1σ with the results from WMAP and Planck. Furthermore, by fixing the cosmological parameters to those provided by Planck, we obtained α = 0.12^+0.06_–0.06, which is fully consistent with the result obtained from the joint analysis of cluster counts and weak lensing performed for this sample.