distant clusters

It was clusters all the time on Friday, as Moustakas's collaborators on the ESO Distant Cluster Survey have been in town all week working on Spitzer data. They discussed some of their results, past and future, at group meeting. In the afternoon, Markevich (CfA) told us about physical measurements of astrophysical plasma that are possible in clusters, particularly in clusters like the famous bullet cluster where there are fast-moving substructures creating shocks.