We discuss how the centres of galaxy clusters evolve in time, showing the results of a series of direct N-body simulations. In particular, we followed the evolution of a galaxy cluster with a mass of about 10^14 solar masses in different configurations. The dynamical evolution of the system leads in all the cases to the formation of dense and massive sub-structures in the cluster centre, that form in consequence of a series of collisions and merging among galaxies travelling in the cluster core. We investigate how the structural properties of the main merging product depends on the characteristics of those galaxies that contributed to its formation.
Formation and evolution of heavy sub-structures in the centre of galaxy clusters: the local effect of dark energy / ARCA SEDDA, Manuel; Donnari, Martina; Merafina, Marco. - STAMPA. - Cosmology, 2016:(2016), pp. 137-138. (Intervento presentato al convegno 51st Rencontres de Moriond - Cosmology 2016 tenutosi a La Thuile, Aosta Valley, Italy nel March 19-26, 2016).
Formation and evolution of heavy sub-structures in the centre of galaxy clusters: the local effect of dark energy
ARCA SEDDA, MANUEL;DONNARI, MARTINA;MERAFINA, Marco
2016
Abstract
We discuss how the centres of galaxy clusters evolve in time, showing the results of a series of direct N-body simulations. In particular, we followed the evolution of a galaxy cluster with a mass of about 10^14 solar masses in different configurations. The dynamical evolution of the system leads in all the cases to the formation of dense and massive sub-structures in the cluster centre, that form in consequence of a series of collisions and merging among galaxies travelling in the cluster core. We investigate how the structural properties of the main merging product depends on the characteristics of those galaxies that contributed to its formation.File | Dimensione | Formato | |
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