  We report on the analysis of XMM-Newton observations of RX J1347.5-1145
(z=0.451), the most X-ray-luminous galaxy cluster. We present a detailed total
and gas mass determination up to large distances (~1.7 Mpc), study the scaling
properties of the cluster, and explore the role of AGN heating in the cluster
cool core. By means of spatially resolved spectroscopy we derive density,
temperature, entropy, and cooling time profiles of the intra-cluster medium. We
compute the total mass profile of the cluster in the assumption of hydrostatic
equilibrium. If the disturbed south-east region of the cluster is excluded from
the analysis, our results on shape, normalization, scaling properties of
density, temperature, entropy, and cooling time profiles are fully consistent
with those of relaxed, cool core clusters. We compare our total and gas mass
estimates with previous X-ray, lensing, dynamical, and SZ studies. We find good
agreement with other X-ray results, dynamical mass measurements, weak lensing
masses and SZ results. We confirm a discrepancy of a factor ~2 between strong
lensing and X-ray mass determinations and find a gross mismatch between our
total mass estimate and the mass reconstructed through the combination of both
strong and weak lensing. We explore the effervescent heating scenario in the
core of RX J1347.5-1145 and find support to the picture that AGN outflows and
heat conduction are able to quenching radiative cooling.

Astrophysics