On the scaling relations of X-ray galaxy clusters

by Dr Veronica Biffi

Monday 7 Oct 2013, 16:00 → 17:00 Europe/Rome

Aula Conversi (Dipartimento di Fisica - Ed. G. Marconi)

The physics of galaxy clusters finds a precious source of information in X-ray observations, which provide us with an increasingly complex and detailed picture of these structures. Theoretically, up-to-date hydrodynamical simulations can currently address many questions about the cluster dynamics and physics, and it becomes more and more vital to find a direct and faithful way to compare their results to real X-ray data. To this purpose, we apply the X-ray virtual telescope PHOX and generate mock X-ray observations out of hydrodynamical simulations. In this way, we can address a number of interesting issues, such as the reconstruction of the cluster temperature distribution via spectral analysis or the investigation of scaling relations among global observable properties. I will present results on a large sample of simulated clusters, dedicated to investigate their self-similar appearance in the X-ray band and via the Sunyaev-Zel'dovich signal, and the agreement with real cluster data.