Black Holes in Globular Clusters: A Structural and Kinematic Perspective
Abstract
Black holes (BHs) play a major role in the structural and dynamical evolutions of Globular Clusters (GCs). Several recent works searched for BHs in Galactic GCs using scaling relations derived from numerical simulations. However, the conclusions drawn by such approaches are strongly dependent on the specific prescriptions adopted in numerical simulations. Therefore, we analyzed a survey of 101 Monte Carlo simulations to identify some observable parameters that allow us to probe the present-day BH population in GCs reliably. We thoroughly show that a single observable is not suited to infer the BH mass fraction in real GCs: similar values could be attained by systems with different BH mass fractions, depending on the specific dynamical evolution of the system. Finally, we present a combination of observable parameters that efficiently breaks this degeneracy. We also compare values from numerical simulations with a sample of Galactic GCs.
Cite
@article{arxiv.2510.15025,
title = {Black Holes in Globular Clusters: A Structural and Kinematic Perspective},
author = {Alessandro Della Croce},
journal= {arXiv preprint arXiv:2510.15025},
year = {2025}
}
Comments
Proceedings contribution (4 pages, 2 figures) to the IAU Symposium 398 and MODEST-25: "Compact Objects and Binaries in Dense Stellar Systems" (Seoul, South Korea, June 2025). This proceeding summarizes results presented in Della Croce et al. (2024, A&A, 690, A179; arXiv:2409.01400)