The clustering of massive Primordial Black Holes as Dark Matter: Measuring their mass distribution with advanced LIGO
Abstract
The recent detection by Advanced LIGO of gravitational waves (GW) from the merging of a binary black hole system sets new limits on the merging rates of massive primordial black holes (PBH) that could be a significant fraction or even the totality of the dark matter in the Universe. aLIGO opens the way to the determination of the distribution and clustering of such massive PBH. If PBH clusters have a similar density to the one observed in ultra-faint dwarf galaxies, we find merging rates comparable to aLIGO expectations. Massive PBH dark matter predicts the existence of thousands of those dwarf galaxies where star formation is unlikely because of gas accretion onto PBH, which would possibly provide a solution to the missing satellite and too-big-to-fail problems. Finally, we study the possibility of using aLIGO and future GW antennas to measure the abundance and mass distribution of PBH in the range [5-200] M⊙ to 10% accuracy.
- Publication:
-
Physics of the Dark Universe
- Pub Date:
- March 2017
- DOI:
- 10.1016/j.dark.2016.10.002
- arXiv:
- arXiv:1603.05234
- Bibcode:
- 2017PDU....15..142C
- Keywords:
-
- Primordial black holes;
- Dark matter;
- Gravitational waves;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- Astrophysics - Astrophysics of Galaxies;
- High Energy Physics - Theory
- E-Print:
- 7 pages, 4 figures. Added Paragraph on the slingshot effect, Fig. 4 and references updated, plus minor revisions