High Redshift Mergers
by Phenomenology TechnologyAugust 29th, 2024
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The PBH model suggests a binary merger rate that increases with redshift, with potential detections at z ≥ 30 serving as strong evidence for primordial black holes. Despite measurement uncertainties, this approach could constrain PBH populations even with low abundances.
Authors:
(1) Antonio Riotto, Département de Physique Theorique, Universite de Geneve, 24 quai Ansermet, CH-1211 Geneve 4, Switzerland and Gravitational Wave Science Center (GWSC), Universite de Geneve, CH-1211 Geneva, Switzerland;
(2) Joe Silk, Institut d’Astrophysique, UMR 7095 CNRS, Sorbonne Universite, 98bis Bd Arago, 75014 Paris, France, Department of Physics and Astronomy, The Johns Hopkins University, Baltimore MD 21218, USA, and Beecroft Institute of Particle Astrophysics and Cosmology, Department of Physics, University of Oxford, Oxford OX1 3RH, UK.
Table of Links
2.1 What is the abundance of PBHs?
2.2 What is the effect of PBH clustering?
2.3 What fraction of the currently observed GW events can be ascribed to PBHs?
3.3 Plugging the pair instability gap with PBH?
3.4 PBH eccentricity, 3.5 PBH spin and 3.6 Future gamma-ray telescopes
3.1 High redshift mergers
The PBH model predicts a binary merger rate density which grows monotonically with redshift [31, 32, 33]. Focusing those binaries generated at early epochs, one has a well-defined time evolution with redshift
This paper is available on arxiv under CC BY 4.0 DEED license.
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