A parametrized analytical model for BBH mass ratios from the stable mass transfer channel is derived and applied to the 10 solar-mass peak in GWTC-4, favoring little mass-ratio reversal.
New gravitational-wave data support a bimodal black-hole mass distribution
5 Pith papers cite this work. Polarity classification is still indexing.
5
Pith papers citing it
abstract
Detailed stellar evolution and supernova models yield a bimodal black-hole mass distribution with a narrow peak around 10 solar masses from stars within a narrow range of progenitor properties and a second broader peak starting around 20 solar masses from very massive progenitors. This bimodal black-hole mass distribution leads to a characteristic distribution of chirp masses of merging binary black holes, with two main peaks arising from the merger of two black holes where both come either from the low- or the high-mass peak and a smaller peak in between from the mixed merger of a low-mass and a high-mass black hole. We carry out a population synthesis study of binary black hole formation and compare the results to the observed chirp masses of gravitational-wave events. We find that only the bimodal black-hole mass prescription is able to reproduce the structure of peaks and gaps in the observed chirp-mass distribution, which is not matched by predictions from other remnant mass prescriptions in the literature.
representative citing papers
GWTC-5 chirp-mass peaks form a ~1.9-spaced ladder with a new ~19 M⊙ rung matching predicted 2G+3G mergers, unifying prior 1G+2G spin-transition groups under one hierarchical scenario.
A Gaia DR3-based census of 105,971 OB stars within 2 kpc maps local Galactic structure and identifies over 4,200 core-collapse supernova or black hole progenitor candidates.
An improved cBHBd code evolves tidally limited star clusters and BBH mergers, reproducing cluster properties to ~10% and merger rates to ~20% after fitting seven parameters to CMC simulations.
Jittering jets in core-collapse supernovae enhance dust formation and imprint jet-shaped morphologies on the dust in remnants, supporting the jittering jets explosion mechanism.
citing papers explorer
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A Strongly Parametrized Mass Ratio Model for the Stable Mass Transfer Channel: a Case Study of the $10 \, \rm{M}_{\odot}$ Peak
A parametrized analytical model for BBH mass ratios from the stable mass transfer channel is derived and applied to the 10 solar-mass peak in GWTC-4, favoring little mass-ratio reversal.
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The Chirp-Mass Ladder: A New Rung Emerges
GWTC-5 chirp-mass peaks form a ~1.9-spaced ladder with a new ~19 M⊙ rung matching predicted 2G+3G mergers, unifying prior 1G+2G spin-transition groups under one hierarchical scenario.
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Unveiling the Milky Way with a Gaia DR3 census of OB-type stars within 2 kpc. I. Tracing local Galactic structure, massive star-forming regions and core-collapse supernova progenitors
A Gaia DR3-based census of 105,971 OB stars within 2 kpc maps local Galactic structure and identifies over 4,200 core-collapse supernova or black hole progenitor candidates.
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cBHBd: A fast code for the evolution of tidally limited star clusters and their binary black hole mergers
An improved cBHBd code evolves tidally limited star clusters and BBH mergers, reproducing cluster properties to ~10% and merger rates to ~20% after fitting seven parameters to CMC simulations.
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Jittering jets promote dust formation in core-collapse supernovae
Jittering jets in core-collapse supernovae enhance dust formation and imprint jet-shaped morphologies on the dust in remnants, supporting the jittering jets explosion mechanism.