A 4.46 solar-mass black hole is found in a 94-year eccentric orbit with a main-sequence turnoff star in ω Centauri via 23-year astrometric monitoring.
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Milky Way globular clusters formed with initial half-mass densities of ~10^6.4 M_sun/pc^3, bottom-light IMFs, and small present-day black hole mass fractions, inferred by coupling rapid evolution models with multimass equilibrium models fitted to present-day observations.
Simulations demonstrate that a retrograde IMBH with mass ratio ~0.67 to the disc mass fragments a stellar disc into inner, misaligned, and outer components within 10-20 Myr.
GWTC-5.0 analysis of 267 events gives BBH merger rate 27.5-49.4 Gpc^{-3} yr^{-1} at z=0.2, evidence for hierarchical-merger subpopulation at two mass scales, mass-spectrum features at 10 and 35 solar masses, and asymmetric effective-spin distribution implying at least 9% aligned channels.
citing papers explorer
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A Long Period Stellar-Mass Black Hole Binary in $\omega$ Centauri
A 4.46 solar-mass black hole is found in a 94-year eccentric orbit with a main-sequence turnoff star in ω Centauri via 23-year astrometric monitoring.
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Fast Dynamical Modelling of Milky Way Globular Clusters -- I. Implications for Initial Cluster Densities
Milky Way globular clusters formed with initial half-mass densities of ~10^6.4 M_sun/pc^3, bottom-light IMFs, and small present-day black hole mass fractions, inferred by coupling rapid evolution models with multimass equilibrium models fitted to present-day observations.
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Stellar discs and intermediate-mass black holes in galactic nuclei I. Fragmenting the disc in an isotropic stellar potential
Simulations demonstrate that a retrograde IMBH with mass ratio ~0.67 to the disc mass fragments a stellar disc into inner, misaligned, and outer components within 10-20 Myr.
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GWTC-5.0: Population Properties of Merging Compact Binaries
GWTC-5.0 analysis of 267 events gives BBH merger rate 27.5-49.4 Gpc^{-3} yr^{-1} at z=0.2, evidence for hierarchical-merger subpopulation at two mass scales, mass-spectrum features at 10 and 35 solar masses, and asymmetric effective-spin distribution implying at least 9% aligned channels.