PreprintCC BY 4.0arXiv
All Dark Matter as Primordial Black Holes: a Gravitational-Wave Test
Abstract
We propose a novel test for the hypothesis that the dark matter of the Universe is composed entirely by asteroidal-mass primordial black holes. It relies on detecting the stochastic gravitational-wave background generated by the coalescence onto rapidly spinning supermassive astrophysical black holes of the light primordial black holes accumulated in spherically symmetric spikes. We discuss the scenarios in which the signal can be observed by the future space-based gravitational-wave observatories LISA and DECIGO.
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BibTeX
@misc{ianniccari2026dark,
title = {{All Dark Matter as Primordial Black Holes: a Gravitational-Wave Test}},
author = {A. Ianniccari and A. J. Iovino and G. Perna and D. Perrone and A. Riotto},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.36177},
eprint = {2610.36177},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.36177},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - All Dark Matter as Primordial Black Holes: a Gravitational-Wave Test
AU - A. Ianniccari
AU - A. J. Iovino
AU - G. Perna
AU - D. Perrone
AU - A. Riotto
PY - 2026
DA - 2026/10/26
PB - arXiv
DO - 10.48550/arxiv.2610.36177
UR - https://arxiv.org/abs/2610.36177
AB - We propose a novel test for the hypothesis that the dark matter of the Universe is composed entirely by asteroidal-mass primordial black holes. It relies on detecting the stochastic gravitational-wave background generated by the coalescence onto rapidly spinning supermassive astrophysical black holes of the light primordial black holes accumulated in spherically symmetric spikes. We discuss the scenarios in which the signal can be observed by the future space-based gravitational-wave observatories LISA and DECIGO.
ER -