Partecipanti: Dominique Eckert (Astronomy Department, University of Geneva, Switzerland)
Dear all, this is to announce that next Monday May 4th at 14h, we will have a special edition of the Tuesday Seminar.
Please note that it will be a ~40 minutes talk.
The speaker will be Dominique Eckert (Astronomy Department, University of Geneva, Switzerland) and the title will be:
Probing the growth of structures in the outskirts of galaxy clusters
Abstract: Structure formation in the Universe operates through the continuous merging of structures and accretion of material from the field along large-scale filaments.
As the largest gravitationally-bound structures, galaxy clusters were the latest to form. The outer regions of massive clusters therefore contain a wealth of information about the processes through which structures grow.
I will give an overview of our current knowledge of accretion processes in cluster outskirts. First, I will show how one can use the combination of X-ray and millimeter observations (the Sunyaev-Zeldovich effect) to extend our knowledge of the physical properties of the gas to hitherto unexplored regions.
I will then show spectacular examples of accreting structures in two nearby clusters, Abell 2142 and Hydra A, and discuss the implications of these findings for our knowledge of the intracluster plasma.
I will finish by presenting recent deep X-ray observations of medium-redshift clusters, which unveil the filamentary structure of the cosmic web surrounding massive clusters.
See you next Monday in the seminar room (floor -1) at 14h.
Francesco & Alessio