Stellar-Mass Black Holes in Globular Clusters: Dynamical Consequences and Observational Signatures
arXiv:1907.13380 · doi:10.1017/S1743921319006847
Abstract
Sizeable number of stellar-mass black holes (BHs) in globular clusters (GCs) can strongly influence the dynamical evolution and observational properties of their host cluster. Using results from a large set of numerical simulations, we identify the key ingredients needed to sustain a sizeable population of BHs in GCs up to a Hubble time. We find that while BH natal kick prescriptions are essential in determining the initial retention fraction of BHs in GCs, the long-term survival of BHs is determined by the size, initial central density and half-mass relaxation time of the GC. Simulated GC models that contain many BHs are characterized by relatively low central surface brightness, large half-light and core radii values. We also discuss novel ways to compare simulated results with available observational data to identify GCs that are most likely to contain many BHs.
arXiv comment4 pages, 2 figures, 1 table. Contribution to the proceedings of the IAU Symposium No. 351: "Star Clusters: from the Milky Way to the Early Universe"
References in corpus (15)
- A Comprehensive Study of Binary Compact Objects as Gravitational Wave Sources: Evolutionary Channels, Rates, and Physical Properties
- A catalogue of masses, structural parameters and velocity dispersion profiles of 112 Milky Way globular clusters
- MOCCA-SURVEY Database I: Coalescing Binary Black Holes Originating From Globular Clusters
- The Dynamical Evolution of Stellar Black Holes in Globular Clusters
- Two stellar-mass black holes in the globular cluster M22
- A detached stellar-mass black hole candidate in the globular cluster NGC 3201
- MOCCA code for star cluster simulations - I. Blue Stragglers, first results
- MOCCA-SURVEY Database I: Galactic Globular Clusters Harbouring a Black Hole Subsystem
- MOCCA-SURVEY Database I. Unravelling black hole subsystems in globular clusters
- The ultracompact nature of the black hole candidate X-ray binary 47 Tuc X9
- How black holes shape globular clusters: Modeling NGC 3201
- MOCCA Survey Database I: Dissolution of tidally filling star clusters harbouring BH subsystems
- On black hole sub-systems in idealized nuclear star clusters
- MOCCA-SURVEY Database I. Intermediate mass black holes in Milky Way globular clusters and their connection to supermassive black holes
- Finding Black Holes with Black Boxes -- Using Machine Learning to Identify Globular Clusters with Black Hole Subsystems