Galaxy clusters mass measurements: news in X-ray and Weak lensing data analysis

We describe the recent improvements made on the techniques for the estimates of the total mass of galaxy clusters using the X-ray data, obtained by the Chandra and XMM satellites, and the weak lensing observations, performed by Subaru telescope. Furthermore, we show the current state of X-ray and weak lensing mass comparison obtained by simulations and observational data. In particular, we use a subsample of 21 galaxy clusters of the LOCUSS High-Lx sample, for which e find that X-ray masses overcome weak lensing mass by about 10%.