Combining Planck and SPT cluster catalogs: cosmological analysis and impact on Planck scaling relation calibration

Understand

We provide the first combined cosmological analysis of South Pole Telescope (SPT) and Planck cluster catalogs.

• The aim is to provide an independent calibration for Planck scaling relations, exploiting the cosmological constraining power of the SPT-SZ cluster catalog and its dedicated weak lensing (WL) and X-ray follow-up observations.
• We build a new version of the Planck cluster likelihood.
• In the $\nu \Lambda$CDM scenario, focusing on the mass slope and mass bias of Planck scaling relations, we find $\alpha_{\text{SZ}} = 1.49_{-0.10}^{+0.07}$ and $(1-b)_{\text{SZ}} = 0.69_{-0.14}^{+0.07}$ respectively.