Abstract
We show that the recent NANOGrav result can be interpreted as a stochastic gravitational wave signal associated to formation of primordial black holes from high-amplitude curvature perturbations. The indicated amplitude and power of the gravitational wave spectrum agrees well with formation of primordial seeds for supermassive black holes.
- Received 17 September 2020
- Accepted 18 January 2021
DOI:https://doi.org/10.1103/PhysRevLett.126.051303
© 2021 American Physical Society
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