Abstract
The binary content in globular clusters is crucial for the dynamical evolution of globular clusters. Studying the X-ray sources population would be an efficient method to explore the binary content since most of the X-ray sources in globular clusters are close binaries. The X-ray sources population comprises various exotic binaries: low mass X-ray binaries, cataclysmic variables, millisecond pulsars, or chromospherically active binaries. By using Chandra and HST data, we would be able to observe and identify the X-ray sources in globular clusters. In order to study the possible formation origins of the X-ray sources in globular clusters, we construct the correlation for the X-ray source number and the physical parameters (core radius, core density, and metallicity) from 20 globular clusters. With the correlation, we would be able to predict the X-ray source number in globular clusters and to constrain their formation mechanisms -- if they are formed through dynamical interactions or from primordial binaries.