Fig. 4: Merger rate per cluster.
From: Dissecting the properties of neutron star–black hole mergers originating in dense star clusters
The surface map shows how the merger rate varies at varying the logarithm cluster half-mass radius (Rh) in parsecs and cluster mass (MGC) in solar masses. Colors define the amount of mergers per year (Γc). Red circles represent galactic globular clusters29, while gray points represent a sample of local nuclear clusters30 and the red diamond identifies the Milky Way nuclear cluster38. Dotted lines mark the limit of 0.1, 1, and 10 events per Gyr per cluster, respectively.
