The In Situ Growth of Stellar-mass "Light" Seed Black Holes in Nuclear Star Clusters

Abstract

Remnant black holes (BHs) of massive stars (``light seeds'') are a potential origin for supermassive black holes (SMBHs). We use magnetohydrodynamic simulations to study the formation and growth of light seeds in star-forming giant molecular clouds (GMCs) with masses $10^5$--$10^9{M}_{\odot }$, which evolve for $\sim 10$--$30\mathrm{Myr}$ and form compact star clusters, akin to high-redshift nuclear star clusters. In particular, the simulations resolve very massive stars (VMSs, 100--$300M_{\odot }$), including their radiative and mechanical feedback, and model feedback-regulated accretion onto remnant BHs. We find that, even in compact GMCs capable of forming deep potential wells, the gas reservoir is expelled by sustained stellar feedback and rapidly dispersed after supernova explosions. Remnant BH populations emerge $\sim 3\mathrm{Myr}$ after the starburst and concentrate at the cluster center (where ${\rho }_{\mathrm{BH}}\sim 10^4$--$10^6{M}_{\odot }{\mathrm{pc}}^{-3}$). With our fiducial sub-grid BH accretion/feedback model, in-situ BH accretion is inefficient for forming heavy seeds: some direct-collapse BHs briefly accrete at $\sim$(1--10)$\times$ the Eddington rate, but they reach only $\sim 400$--$500M_{\odot }$. A top-heavy initial mass function or natal kicks do not change this conclusion. Runaway accretion is only possible if the sub-grid BH model allows a high fraction of Bondi inflow to reach the BH, in which case a few seeds can grow to $\sim 10^6{M}_{\odot }$. We also discuss multiple-generation star formation that may be intrinsically correlated with remnant BH accretion.

arXiv comment12 pages, 8 figures

References in corpus (71)

• Energy input from quasars regulates the growth and activity of black holes and their host galaxies
• Modeling feedback from stars and black holes in galaxy mergers
• The Initial Mass Function of Stars: Evidence for Uniformity in Variable Systems
• Galaxies on FIRE (Feedback In Realistic Environments): Stellar Feedback Explains Cosmologically Inefficient Star Formation
• GIZMO: A New Class of Accurate, Mesh-Free Hydrodynamic Simulation Methods
• FIRE-2 Simulations: Physics versus Numerics in Galaxy Formation
• Formation of Supermassive Black Holes by Direct Collapse in Pregalactic Halos
• Formation of the First Supermassive Black Holes
• The formation of massive black holes through collision runaway in dense young star clusters
• Intermediate-Mass Black Holes
• Multiple Stellar Populations in Globular Clusters
• The Assembly of the First Massive Black Holes
• A Luminous Quasar at Redshift 7.642
• A Global Three Dimensional Radiation Magneto-hydrodynamic Simulation of Super-Eddington Accretion Disks
• The Pulsar Kick Velocity Distribution
• Formation of Massive Black Holes in Dense Star Clusters. I. Mass Segregation and Core Collapse
• Rapid growth of high redshift black holes
• The Bolometric Quasar Luminosity Function at z = 0-7
• The Structure of the Interstellar Medium of Star Forming Galaxies
• Accretion onto the First Stellar Mass Black Holes
• The Assembly of Supermassive Black Holes at High Redshifts
• The origins of massive black holes
• An Analytic Model of Angular Momentum Transport by Gravitational Torques: From Galaxies to Massive Black Holes
• Super-Critical Growth of Massive Black Holes from Stellar-Mass Seeds
• Gravitational torque-driven black hole growth and feedback in cosmological simulations
• Super-Eddington Accretion Disks around Supermassive black Holes
• Blossoms from black hole seeds: properties and early growth regulated by supernova feedback
• Black hole evolution: I. Supernova-regulated black hole growth
• How To Model Supernovae in Simulations of Star and Galaxy Formation
• Stellar and Quasar Feedback in Concert: Effects on AGN Accretion, Obscuration, and Outflows
• PARSEC V2.0: Stellar tracks and isochrones of low and intermediate mass stars with rotation
• STARFORGE: Toward a comprehensive numerical model of star cluster formation and feedback
• The aftermath of the first stars: massive black holes
• When Feedback Fails: The Scaling and Saturation of Star Formation Efficiency
• Accurate, Meshless Methods for Magneto-Hydrodynamics
• FIRE-3: Updated Stellar Evolution Models, Yields, & Microphysics and Fitting Functions for Applications in Galaxy Simulations
• Radiative Stellar Feedback in Galaxy Formation: Methods and Physics
• The GRIFFIN project -- Formation of star clusters with individual massive stars in a simulated dwarf galaxy starburst
• Supermassive Star Formation via Super Competitive Accretion in Slightly Metal-enriched Clouds
• STARFORGE: The effects of protostellar outflows on the IMF
• Very Massive Stars: a metallicity-dependent upper-mass limit, slow winds, and the self-enrichment of Globular Clusters
• Nitrogen-enriched, highly-pressurized nebular clouds surrounding a super star cluster at cosmic noon
• From the Top Down and Back Up Again: Star Cluster Structure from Hierarchical Star Formation
• Very massive stars and Nitrogen emitting galaxies
• FORGE'd in FIRE: Resolving the End of Star Formation and Structure of AGN Accretion Disks from Cosmological Initial Conditions
• FORGE'd in FIRE II: The Formation of Magnetically-Dominated Quasar Accretion Disks from Cosmological Initial Conditions
• INFERNO: Galactic winds in dwarf galaxies with star-by-star simulations including runaway stars
• The Maximum Stellar Surface Density Due to the Failure of Stellar Feedback
• Galactic chemical enrichment with new metallicity dependent yields
• 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
• Evolutionary tracks, ejecta, and ionizing photons from intermediate-mass to very massive stars with PARSEC
• Massive Black Hole Seeds
• Cosmological DCBH formation sites hostile for their growth
• A New Discrete Dynamical Friction Estimator Based on $N$-body Simulations
• Comparing Models for IMF Variation Across Cosmological Time in Milky Way-like Galaxies
• Hyper-Eddington Black Hole Growth in Star-Forming Molecular Clouds and Galactic Nuclei: Can It Happen?
• The mass budget for intermediate-mass black holes in dense star clusters
• From Seeds to Supermassive Black Holes: Capture, Growth, Migration, and Pairing in Dense Proto-Bulge Environments
• EDGE-INFERNO: Simulating every observable star in faint dwarf galaxies and their consequences for resolved-star photometric surveys
• Massive black hole formation in Population III star clusters
• Zooming In On The Multi-Phase Structure of Magnetically-Dominated Quasar Disks: Radiation From Torus to ISCO Across Accretion Rates
• Growth of Light-Seed Black Holes in Gas-Rich Galaxies at High Redshift
• An ultrafast outflow in the black hole candidate MAXI J1810-222?
• Accretion onto supermassive and intermediate mass black holes in cosmological simulations
• The ASTRID Simulation at z=0: From Massive Black Holes to Large-scale Structure
• Feedback-regulated Seed Black Hole Growth in Star-Forming Molecular Clouds and Galactic Nuclei
• Very Massive Stars and High N/O: A Tale of the Nitrogen-enriched Super Star Cluster in the Sunburst Arc
• Accretion disc winds in X-ray binaries
• Growth of Light Seed Black Holes in the Early Universe
• The MandelZoom project II: the impact of stellar feedback on black hole accretion through an $\alpha$-disc in dwarf galaxies with a resolved interstellar medium
• Origin of High Dark Remnant Fractions in Milky Way Globular Clusters: The Crucial Role of Initial Black Hole Retention