Metal distribution in sloshing galaxy clusters: the case of A496
  We report results from a detailed study of the sloshing gas in the core of
A496. We detect the low temperature/entropy spiral feature found in several
cores, we also find that conduction between the gas in the spiral and the
ambient medium must be suppressed by more than one order of magnitude with
respect to Spitzer conductivity. Intriguingly, while the gas in the spiral
features a higher metal abundance than the surrounding medium, it follows the
entropy vs metal abundance relation defined by gas lying outside the spiral.
The most plausible explanation for this behavior is that the low entropy metal
rich plasma uplifted through the cluster atmosphere by sloshing, suffers little
heating or mixing with the ambient medium. While sloshing appears to be capable
of uplifting significant amounts of gas, the limited heat exchange and mixing
between gas in and outside the spiral implies that this mechanism is not at all
effective in: 1) permanently redistributing metals within the core region and
2) heating up the coolest and densest gas, thereby providing little or no
contribution to staving of catastrophic cooling in cool cores.
