THE COMPLEX DYNAMICS OF THE THERMAL AND NONTHERMAL INTRACLUSTER GAS

We propose observations of two hybrid merging/cooling flow clusters, A115N/S,and A1664/3541 which have bimodal optical and Xray distributions. Generally,mergers and cooling flows are anticorrelated; mergers appear to destroy coolingflows. We will study the time scale and physical conditions for cooling flowdisruption. Both clusters have cooling flow central radio galaxies, which mayalso act to reheat cooled gas. Both clusters have diffuse cluster radio relicsources, which are usually associated with merger shocks. However, our recentobservation of Abell 133 showed that some radio relics may be old radio bubblesfrom cooling flow central radio sources. We will study the relationship betweenradio relics, merger shocks, and cooling flow central radio bubbles. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]