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OATS-UNI/TS SEMINAR
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Speaker: Susana Planelles (DAUT - Trieste)

Title: Exploring gravitational feedback processes in a cosmological context
Date: Wednesday, November 9th, 2011
Time: 15:00
Venue: Villa Bazzoni
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Abstract: Present-day hydrodynamics/N-body simulations still present important discrepancies with the observations, especially in the inner regions of massive galaxy clusters. These discrepancies have motivated the idea that, besides gravity and adiabatic gas dynamics, non-gravitational processes related with the baryonic component of the Universe need to be included in simulations. Nevertheless, within this context, it is also crucial to properly describe the different gravitational processes inherent to the hierarchical formation of cosmic structures. In this contribution, making use of an Eulerian cosmological code and a grid-based halo finder, we will analyse the role played by galaxy cluster mergers, as well as by the cosmological shock waves developed during these events, as sources of feedback and reheating of the ICM in a full cosmological context. We will pay especial attention to discuss the role of these merger events on the existence of cool cores in galaxy clusters, as well as in the scaling relations.
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Contact: Stefano Borgani (DAUT)