  Recent observations reveal detailed structures of mergers in galaxy clusters.
Moving cold fronts could be identified as remnants of subclusters. They are
believed to mark the late stage of a merging process. Dynamics, geometry and
extension of the subclusters can be very different: Spherically shaped bodies
with a radius of $\approx 20 kpc$ up to $\approx 400 kpc$ and Mach numbers
between $\mathcal{M}\approx 0.4$ and $\mathcal{M}\approx 1.5$ are observed. In
order to analyse the Sunyaev-Zeldovich (SZ) signal, we calculate the modified
pressure profile for an ongoing merger.
