The relaxed galaxy cluster Zwicky 3146 is analyzed via the SuperModel , a tool already tested on many clusters since 2009 .
In particular , this analysis is focused on the intracluster medium X-ray temperature data measured by XMM-Newton up to r _ { 500 } .
A previous analysis was based on the temperature profile derived from the Sunyaev-Zeld ^ { \prime } ovich effect pressure data .
The gas mass fraction f _ { gas } is obtained from the resulting SuperModel temperature profile extrapolated up to the virial radius R , that turns out in agreement with the steep temperature profiles observed by Suzaku , and from the gas density profile observed by XMM-Newton .
The comparison between f _ { gas } with the universal value indicates a non-thermal pressure component , p _ { nth } , in the cluster outskirts .
The SuperModel analysis shows a ratio \alpha ( R ) ( \simeq 50 \% ) of p _ { nth } to the total pressure greater than the values found by simulations , highlighting the possible presence of accreting substructures and inhomogeneities in the gas density profile .
Once that this profile is corrected for clumpiness , the level of p _ { nth } is considerably reduced .
However , a significant turbulence ( \alpha ( R ) \simeq 20 \% ) and entropy flattening are still present in the outskirts of the galaxy cluster Zwicky 3146 .