Spins of primordial binary black holes before coalescence

Abstract

Primordial stellar-mass black holes, which may contribute to dark matter and to the observed LIGO binary black hole coalescences, are expected to be born with very low spins. Here we show that accretion mass gain by the components of a primordial black hole binary from the surrounding matter could lead to noticeable spins of the components prior to the coalescence provided high initial orbital eccentricities.

arXiv comment11 pages, 5 figures, accepted to JCAP. Typo in Eq. (3.4) corrected, Fig. 4 substituted. No changes in the conclusions

References in corpus (17)

• Observation of Gravitational Waves from a Binary Black Hole Merger
• Did LIGO detect dark matter?
• Primordial Black Holes as Dark Matter
• The first gravitational-wave source from the isolated evolution of two 40-100 Msun stars
• A new route towards merging massive black holes
• Binary Black Hole Mergers from Globular Clusters: Masses, Merger Rates, and the Impact of Stellar Evolution
• Gravitational Waves from Coalescing Black Hole MACHO Binaries
• Merging black hole binaries: the effects of progenitor's metallicity, mass-loss rate and Eddington factor
• Dynamical Formation of the GW150914 Binary Black Hole
• The spin of the second-born black hole in coalescing binary black holes
• Clusters of primordial black holes
• The Initial Spin Probability Distribution of Primordial Black Holes
• Black Hole Binary Formation in the Expanding Universe --- Three Body Problem Approximation ---
• Solving puzzles of GW150914 by primordial black holes
• Gravitational waves from primordial black holes collisions in binary systems
• Implications of the low binary black hole aligned spins observed by LIGO
• Black hole spins in coalescing binary black holes

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• On mass distribution of coalescing black holes
• The impact of distant fly-bys on the rate of binary primordial black hole mergers
• Spins of black holes in coalescing compact binaries
• The Origin of Binary Black Holes Mergers
• Primordial Black Holes Around Us Now, Long Before, and Far away
• Gravitational wave astronomy: astrophysical and cosmological inferences