Merging Processes and SZ Effect
P. M. Koch, Ph. Jetzer
Abstract
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 ≈ 20 kpc up to ≈ 400 kpc and Mach numbers between M≈ 0.4 and M≈ 1.5 are observed. In order to analyse the Sunyaev-Zeldovich (SZ) signal, we calculate the modified pressure profile for an ongoing merger.
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