| Gravitational wave background as a probe of the primordial black hole abundance (2008) | |||||||||
Abstract | |||||||||
| Formation of primordial black holes (PBHs) requires a large root-mean-square amplitude of density fluctuations, which generate second-order tensor perturbations that can be compared with observational constraints. We show that pulsar timing data essentially rules out PBHs with $10^{2-4}\msolar$ which were previously considered as a candidate of intermediate-mass black hoes and that PBHs with mass range $10^{20-26}$ g may be probed by future space-based laser interferometers.. Comment: 4 pages, 2 figures | |||||||||
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