Metal jumps across sloshing cold fronts: the case of A496
  Cold-fronts in cool-core clusters are thought to be induced by minor mergers
and to develop through a sloshing mechanism. While temperature and
surface-brightness jumps have been detected and measured in many systems, a
detailed characterization of the metal abundance across the discontinuity is
only available for a handful of objects. Within the sloshing scenario, we
expect the central cool and metal rich gas to be displaced outwards into lower
abundance regions, thus generating a metal discontinuity across the front. We
analyzed a long (120 ksec) XMM-Newton observation of A496 to study the metal
distribution and its correlation with the cold-fronts. We find Fe
discontinuities across the two main cold-fronts located ~60 kpc NNW and ~160
kpc South of the peak and a metal excess in the South direction.
