Great Balls of FIRE IV. The contribution of massive star clusters to the astrophysical population of merging binary black holes

Abstract

The detection of over a hundred gravitational wave signals from double compacts objects have confirmed the existence of such binaries with tight orbits. Two main formation channels are generally considered to explain the formation of these merging binary black holes (BBHs): the isolated evolution of stellar binaries, and the dynamical assembly in dense environments, namely star clusters. Although their relative contributions remain unclear, several analyses indicate that the detected BBH mergers probably originate from a mixture of these two distinct scenarios. We study the formation of massive star clusters across time and at a cosmological scale to estimate the contribution of these dense stellar structures to the overall population of BBH mergers. To this end, we propose three different models of massive star cluster formation based on results obtained with zoom-in simulations of individual galaxies. We apply these models to a large sample of realistic galaxies identified in the $(22.1\mathrm{Mpc}{)}^3$ cosmological volume simulation \firebox. Each galaxy in this simulation has a unique star formation rate, with its own history of halo mergers and metallicity evolution. Combined with predictions obtained with the Cluster Monte Carlo code for stellar dynamics, we are able to estimate populations of dynamically formed BBHs in a collection of realistic galaxies. Across our three models, we infer a local merger rate of BBHs formed in massive star clusters consistently in the range $1-10{\mathrm{Gpc}}^{-3}{\mathrm{yr}}^{-1}$. Compared with the local BBH merger rate inferred by the LIGO-Virgo-KAGRA Collaboration (in the range $17.9-44{\mathrm{Gpc}}^{-3}{\mathrm{yr}}^{-1}$ at $z=0.2$), this could potentially represent up to half of all BBH mergers in the nearby Universe. This shows the importance of this formation channel in the astrophysical production of merging BBHs.

19 pages, 10 figures

References in corpus (45)

• Cosmic Star Formation History
• Binary interaction dominates the evolution of massive stars
• A New Calculation of the Ionizing Background Spectrum and the Effects of HeII Reionization
• One Channel to Rule Them All? Constraining the Origins of Binary Black Holes using Multiple Formation Pathways
• The Dynamical Evolution of Stellar Black Holes in Globular Clusters
• The cosmic merger rate density of compact objects: impact of star formation, metallicity, initial mass function and binary evolution
• Hierarchical black hole mergers in young, globular and nuclear star clusters: the effect of metallicity, spin and cluster properties
• Galactic Dark Matter Halos and Globular Cluster Populations. III: Extension to Extreme Environments
• The redshift evolution of the binary black hole merger rate: a weighty matter
• Star cluster formation in cosmological simulations. I. Properties of young clusters
• Binary black holes in young star clusters: the impact of metallicity
• A New Census of the 0.2< z <3.0 Universe, Part II: The Star-Forming Sequence
• Public data release of the FIRE-2 cosmological zoom-in simulations of galaxy formation
• Modeling the Formation of Globular Cluster Systems in the Virgo Cluster
• Modeling Dense Star Clusters in the Milky Way and Beyond with the Cluster Monte Carlo Code
• FIREbox: Simulating galaxies at high dynamic range in a cosmological volume
• Fingerprints of binary black hole formation channels encoded in the mass and spin of merger remnants
• Host galaxies of merging compact objects: mass, star formation rate, metallicity and colours
• Merger rate of black hole binaries from globular clusters: theoretical error bars and comparison to gravitational wave data from GWTC-2
• Radii of Young Star Clusters in Nearby Galaxies
• A model for the formation of stellar associations and clusters from giant molecular clouds
• No peaks without valleys: The stable mass transfer channel for gravitational-wave sources in light of the neutron star-black hole mass gap
• The formation of low metallicity globular clusters in dwarf galaxy mergers
• Star formation triggered by galaxy interactions in modified gravity
• Population synthesis of ultracompact X-ray binaries in the Galactic Bulge
• Mass and star formation rate of the host galaxies of compact binary mergers across cosmic time
• The time delay distribution and formation metallicity of LIGO-Virgo's binary black holes
• The Two-Dimensional Metallicity Distribution and Mixing Scales of Nearby Galaxies
• Evolution of giant molecular clouds across cosmic time
• Morphology and enhanced star formation in a Cartwheel-like ring galaxy
• Local positive feedback in the overall negative: the impact of quasar winds on star formation in the FIRE cosmological simulations
• Sub-parsec resolution cosmological simulations of star-forming clumps at high redshift with feedback of individual stars
• Great Balls of FIRE II: The evolution and destruction of star clusters across cosmic time in a Milky Way-mass galaxy
• Isolated and dynamical black hole mergers with \texttt{B-POP}: the role of star formation and dynamics, star cluster evolution, natal kicks, mass and spins, and hierarchical mergers
• Formation of globular clusters in dwarf galaxies of the Local Group
• The locations of features in the mass distribution of merging binary black holes are robust against uncertainties in the metallicity-dependent cosmic star formation history
• Dynamics of binary black holes in young star clusters: the impact of cluster mass and long-term evolution
• Globular cluster formation histories, masses and radii inferred from gravitational waves
• The Panchromatic Hubble Andromeda Treasury: Triangulum Extended Region (PHATTER). III. The Mass Function of Young Star Clusters in M33
• Evolution of star cluster systems in isolated galaxies: first results from direct $N$-body simulations
• The Redshift Evolution of the Binary Black Hole Mass Distribution from Dense Star Clusters
• Demographics of Hierarchical Black Hole Mergers in Dense Star Clusters
• SIEGE III: The formation of dense stellar clusters in sub-parsec resolution cosmological simulations with individual star feedback
• Understanding the progenitor formation galaxies of merging binary black holes
• Great Balls of FIRE III: Modeling Black Hole Mergers from Massive Star Clusters in Simulations of Galaxies

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• On the Astrophysical Origin of Binary Black Hole Subpopulations: A Tale of Three Channels?
• Characterizing Binary Black Hole Subpopulations in GWTC-4 with Binned Gaussian Processes: On the Origins of the $35M_{\odot }$ Peak