The peculiar millisecond pulsars in the globular clusters NGC 6397 and NGC 6752

The millisecond pulsars discovered in globular clusters are diagnostic tools for studying the dynamics of the clusters, the intracluster ionized gas and the evolution of the binaries embedded in the cluster. In the first two years of a search at 1.4 GHz in progress at the Parkes radio telescope 12 new millisecond pulsars have been discovered in 6 globular clusters in which no pulsars were previously known. The scientific fall-back of these discoveries is here discussed for the case of two globular clusters: NGC 6397 and NGC 6752