MOCCA-Survey Database: Extra Galactic Globular Clusters. III. The population of black holes in Milky Way and Andromeda-like galaxies

Abstract

In this work, we investigate the black hole (BH) population of globular clusters (GCs) in Milky Way- (MW) and Andromeda- (M31) like galaxies. We combine the population synthesis code MASinGa and the MOCCA-Survey Database I to infer the properties of GCs harbouring a BH subsystem (BHS), an IMBH, or neither of those. We find that the typical number of GCs with a BHS, an IMBH, or none become comparable in the galactic outskirts, whilst the inner galactic regions are dominated by GCs without a significant dark component. Our models suggest that GCs harbouring a BHS are slightly heavier and with larger half-mass radii compared to the overall population. We retrieve the properties of binary BHs (BBHs) that have either merged in the last 3 Gyr or survived in their parent cluster until present-day. We find that around 80\% of the merging BBHs form due to dynamical interactions while the remaining originate from evolution of primordial binaries. We infer a merger rate for BBHs in the local Universe of $1.0-23\mathrm{y}{\mathrm{r}}^{-1}\mathrm{Gp}{\mathrm{c}}^{-3}$, depending on the adopted assumptions. We find around 100-240 BBHs survive until present-day and are mostly concentrated in the inner few kpc of the galaxy. We estimate also the number of BHs transported into the galactic nucleus by infalling star clusters, finding around 1,000-3,000 BHs and 100-200 BBHs are transported over a time span of 12 Gyr. This enables us to constrains the total amount of BHs and BBHs binaries lurking in nuclear star cluster, i.e. $N_{BHs}=(1.4-2.2)\times 10^4$ and $N_{BBHs}=700-1,100$.

18 pages,15 figures

References in corpus (36)

• Introducing the Illustris Project: Simulating the coevolution of dark and visible matter in the Universe
• MOCCA-SURVEY Database I: Coalescing Binary Black Holes Originating From Globular Clusters
• The Dynamical Evolution of Stellar Black Holes in Globular Clusters
• Black holes and core expansion in massive star clusters
• The Evolution of Galaxy Number Density at z < 8 and its Implications
• Stellar-mass black holes in young massive and open stellar clusters and their role in gravitational-wave generation II
• The Cosmic Evolution of Binary Black Holes in Young, Globular and Nuclear Star Clusters: Rates, Masses, Spins and Mixing Fractions
• Intermediate Mass Black Hole Formation in compact Young Massive Star Clusters
• The Galactic distribution of X-ray binaries and its implications for compact object formation and natal kicks
• Intermediate-mass Black Holes from High Massive-star Binary Fractions in Young Star Clusters
• On the mass-radius relation of hot stellar systems
• The Globular Cluster Migratory Origin of Nuclear Star Clusters
• The effect of stellar-mass black holes on the structural evolution of massive star clusters
• The ultracompact nature of the black hole candidate X-ray binary 47 Tuc X9
• Search for intermediate mass black hole binaries in the third observing run of Advanced LIGO and Advanced Virgo
• An updated survey of globular clusters in M 31. I. Classification and radial velocity for 76 candidate clusters
• Intermediate mass black holes from stellar mergers in young star clusters
• Preparing the next gravitational million-body simulations: Evolution of single and binary stars in Nbody6++GPU, MOCCA and McLuster
• Radio observations of NGC 2808 and other globular clusters: constraints on intermediate mass black holes
• Absolute V-band magnitudes and mass-to-light ratios of Galactic globular clusters
• Black hole mergers in compact star clusters and massive black hole formation beyond the mass-gap
• Dynamics of binary black holes in low-mass young star clusters
• Observational Evidence for a Dark Side to NGC5128's Globular Cluster System
• MOCCA SURVEY Database I: Binary Black Hole Mergers from Globular Clusters with Intermediate Mass Black Holes
• VLA Limits for Intermediate Mass Black Holes in Three Globular Clusters
• Mass Evaporation Rate of Globular Clusters in a Strong Tidal Field
• On the origin of a rotating metal-poor stellar population in the Milky Way Nuclear Cluster
• The central dynamics of M3, M13, and M92: Stringent limits on the masses of intermediate-mass black holes
• Dynamics of binary black holes in young star clusters: the impact of cluster mass and long-term evolution
• MOCCA-SURVEY Database I. Intermediate mass black holes in Milky Way globular clusters and their connection to supermassive black holes
• MOCCA-SURVEY Database II -- Properties of Intermediate Mass Black Holes escaping from star clusters
• A Monte Carlo study of early gas expulsion and evolution of star clusters: new simulations with the MOCCA code in the AMUSE framework
• Orbits of 152 Globular Clusters of the Milky Way Galaxy Constructed from the Gaia DR2 data
• The Evolution of Kicked Stellar-Mass Black Holes in Star Cluster Environments
• Merger rate density of stellar-mass binary black holes from young massive clusters, open clusters, and isolated binaries: comparisons with LIGO-Virgo-KAGRA results
• MOCCA-Survey Database: Extra Galactic Globular Clusters. II. Milky Way and Andromeda

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