Topic: Detectability of Gravitational Waves from the Coalescence of Massive Primordial Black Holes with Initial Clustering

Speaker: Yi Wang, The Hong Kong University of Science and Technology 

Time: 14:00, April 23, 2019

Venue: Physics Building 310

Abstract: We show that the effect of initial non-Gaussian clustering can significantly enhance the event rate for primordial black hole (PBH) coalescence. The impact of such clustering is studied in a specific scenario of multi-stream inflation. Initial clustering enables the possibility of detecting massive PBH coalescence by space-based gravitational wave interferometers such as LISA and DECIGO/BBO. The parameter regime for the ground-based detectors to detect PBH coalescence is also extended.