Constraining cosmology with a new all-sky Compton parameter map from the
  Planck PR4 data
  We constructed a new all-sky Compton parameter map (y-map) of the thermal
Sunyaev-Zel'dovich (tSZ) effect from the 100 to 857 GHz frequency channel maps
delivered within the Planck data release 4. The improvements in terms of noise
and systematic effects translated into a y-map with a noise level smaller by
~7% compared to the maps released in 2015, and with significantly reduced
survey stripes. The produced 2020 y-map is also characterized by residual
foreground contamination, mainly due to thermal dust emission at large angular
scales and to CIB and extragalactic point sources at small angular scales.
Using the new Planck data, we computed the tSZ angular power spectrum and found
that the tSZ signal dominates the y-map in the multipole range, 60 < l < 600.
We performed the cosmological analysis with the tSZ angular power spectrum and
found S8=0.764+0.015-0.018(stat)+0.031-0.016(sys), including systematic
uncertainties from a hydrostatic mass bias and pressure profile model. The S8
value may differ by +-0.016 depending on the hydrostatic mass bias model and by
+0.021 depending on the pressure profile model used for the analysis. The
obtained value is fully consistent with recent KiDS and DES weak-lensing
observations. While our result is slightly lower than the Planck CMB one, it is
consistent with the latter within 2 sigma.
