Corpus ID: 220961587

LIGO/Virgo black holes and dark matter: The effect of spatial clustering

@inproceedings{Atal2020LIGOVirgoBH,
  title={LIGO/Virgo black holes and dark matter: The effect of spatial clustering},
  author={Vicente Atal and Albert Sanglas and Nikolaos Triantafyllou},
  year={2020}
}
We discuss the effect of clustering for the determination of the merger rate of binary black holes in the LIGO mass range. While for a Poissonian initial distribution, and assuming isolated binaries, the allowed fraction of Primordial Black Holes (PBHs) to dark matter (DM) is a few percent, we show that this bound can be relaxed if PBHs are clustered. More precisely we show that for large clustering the merger rate can drop with increasing fraction of PBHs, introducing a degeneracy in the… CONTINUE READING

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