Mapping the gas thermodynamic properties of the massive cluster merger
  MOO J1142$+$1527 at z = 1.2
  We present the results of the analysis of the very massive cluster MOO
J1142$+$1527 at a redshift $z = 1.2$ based on high angular resolution NIKA2
Sunyaev-Zel'dovich (SZ) and $Chandra$ X-ray data. This multi-wavelength
analysis enables us to estimate the shape of the temperature profile with
unprecedented precision at this redshift and to obtain a map of the gas entropy
distribution averaged along the line of sight. The comparison between the
cluster morphological properties observed in the NIKA2 and $Chandra$ maps
together with the analysis of the entropy map allows us to conclude that MOO
J1142$+$1527 is an on-going merger hosting a cool-core at the position of the
X-ray peak. This work demonstrates how the addition of spatially-resolved SZ
observations to low signal-to-noise X-ray data can bring valuable insights on
the intracluster medium thermodynamic properties at $z>1$.
