THE STELLAR COLLISION RATE AND NEUTRON STAR BINARIES IN GLOBULAR CLUSTERS

Our program to investigate the nature of the dim Xray sources in globularclusters (GCs), proposed to be various binaries, has revealed two quiescentXray binaries with a neutron star primary (qNSs). Examining 8 other GCs,indicates that a correlation exists between the collision rate and the number ofqNSs. We wish to observe 4 GCs, which should contain varying numbers of qNS, totry to verify the relation, which has implications for the formation andevolution of GCs. Using the welldetermined neutron star parameters will alsohelp exclude many possible equations of state. Further, we will continue tocharacterize the content of GCs, as it is of interest for theories of binaryproduction and evolution, and the evolution and survival of GCs. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]