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

Authors
  • Ding, Qianhang
  • Nakama, Tomohiro
  • Silk, Joseph
  • Wang, Yi
Publication Date
Apr 03, 2019
Source
HAL-UPMC
Keywords
Language
English
License
Unknown
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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.

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