Our XMM-Newton observations of Abell 85 confirm the extended 4 Mpc filament first detected with ROSAT , which has an X-ray temperature of about \sim 2 keV and is probably made of groups falling on to the cluster .
A comparison of the temperature map with numerical simulations show that Abell 85 had intense merging activity in the past and is not fully relaxed , even in the central region .
Finally , a deprojected temperature profile has been calculated and used , together with the suface brightness , to estimate the entropy and pressure profiles .
Abell 85 only presents a mild flattening of the entropy profile in the center , showing no evidence of an “ entropy floor ” .