Merging Processes and SZ Effect

P. M. Koch; Ph. Jetzer

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arXiv · astro-ph/0406461

Merging Processes and SZ Effect

P. M. Koch·Ph. Jetzer

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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 $\approx 20 kpc$ 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.

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P. M. Koch, Ph. Jetzer. 2004-06-21. Merging Processes and SZ Effect. https://arxiv.org/abs/astro-ph/0406461

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