Mass bias and cosmological constraints from Planck cluster clustering

Understand

We analysed the 3D clustering of the Planck sample of Sunyaev-Zeldovich (SZ) selected galaxy clusters, focusing on the redshift-space two-point correlation function (2PCF).

• We compared our measurements to theoretical predictions of the standard $\Lambda$ cold dark matter ($\Lambda$CDM) cosmological model, deriving an estimate of the Planck mass bias, $b_{\mathrm SZ}$, and cosmological parameters.
• We measured the 2PCF of the sample in the cluster-centric radial range $r\in[10,150]$ $h^{-1}$Mpc, considering 920 galaxy clusters with redshift $z\leq0.8$.
• A Markov chain Monte Carlo analysis has been performed to constrain $b_{\mathrm SZ}$, assuming priors on cosmological parameters from Planck Cosmic Microwave Background (CMB) results.