Compact Binaries Ejected from Globular Clusters as GW Sources

Understand

Performing N-body simulations, we examine the dynamics of BH-BH (10 Msun each) and NS-NS (1.4 Msun each) binaries formed in a cluster and its implications for gravitational wave detection.

• A significant fraction of compact binaries are ejected from a globular cluster after core collapse.
• Among the total number of ejected compact objects, 30 per cent of them are in binaries.
• Merging time-scales of ejected binaries, which depend on the cluster's velocity dispersion, are in some cases shorter than the age of the universe.