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The Merger Rate of Black Holes in a Primordial Black Hole Cluster

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arxiv 2105.14523 v1 pith:DAB5H6RX submitted 2021-05-30 astro-ph.CO

classification astro-ph.CO
keywords blackclusterholesclustersmassmergerratehole
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abstract

In this paper, the merger rate of black holes in a cluster of primordial black holes (PBHs) is investigated. The clusters have characteristics close to those of typical globular star clusters. A cluster that has a wide mass spectrum ranging from $10^{-2}$ to $10 \, M_{\odot}$ (Solar mass) and contains a massive central black hole of the mass $M_{\bullet} = 10^3 \, M_{\odot}$ is considered. It is shown that in the process of the evolution of cluster, the merger rate changed significantly, and by now, the PBH clusters have passed the stage of active merging of the black holes inside~them.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Evolution of a black hole cluster in full general relativity

    gr-qc 2025-05 conditional novelty 8.0 of 10

    A 25-black-hole cluster evolved in full general relativity undergoes runaway hierarchical merging into a single roughly 22m0 black hole, ejects one member at 0.51c, and produces a gravitational-wave signal with an ecc...

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