GWTC-5.0 black-hole mergers split into four subpopulations: a dominant ~10 solar-mass group, an unequal-mass branch, a near-equal-mass 30–35 solar-mass branch, and a rare high-mass hierarchical group.
Gravitational waves from supernova mass loss and natal kicks in close binaries , volume=
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Revealing Four Subpopulations of Binary Black-Hole Mergers with the Fifth Gravitational-Wave Transient Catalog
GWTC-5.0 black-hole mergers split into four subpopulations: a dominant ~10 solar-mass group, an unequal-mass branch, a near-equal-mass 30–35 solar-mass branch, and a rare high-mass hierarchical group.