Revision 2

Accepted · core change · record

Changes against revision 1:

Title: What fraction of merging black holes comes from each channel?
Plain: Black-hole pairs could form from two stars born together, from encounters in crowded star clusters, or inside gas disks around supermassive black holes.
Precise: Determine the fractions of the LIGO-Virgo-KAGRA binary black hole population arising from isolated binary evolution (common envelope, stable mass transfer, chemically homogeneous evolution), dynamical assembly in globular, nuclear and young clusters, AGN disks and hierarchical mergers, using the distributions of masses, effective and precessing spins $(\chi_{\mathrm{eff}}, \chi_{p})$, mass ratio and redshift. Answer: fractions with credible intervals.
Settled by · changed · core: Revision 1: Population inference on a catalog of order $1e3$ events with spin and eccentricity measurements that separate channel signatures.; Revision 2: Population inference on a catalog of order $10^{3}$ events with spin and eccentricity measurements that separate channel signatures.
Kind: phenomenon
Answer type: identification
References: (empty)
Literature status: open
Status note: 2025: the GWTC-4.0 catalog added the events of the first part of the fourth observing run; the mass distribution shows structure (peaks near $10\ \text{and}\ 35\,M_{\mathrm{sun}}$) not yet assigned to channels.
Posed since: (empty)

Decisions