2008/06/14 by Thomas J. Maccarone, Mathieu Servillat
Physics and Astronomy · #Accretion (finance) #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Black hole (networking) #Cluster (spacecraft) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Globular cluster #Intermediate-mass black hole #Population #Star cluster #astro-ph
paper · pdf · doi:10.1111/j.1365-2966.2008.13577.x
6 pages, 1 table, no figures, accepted to MNRAS
arxiv created 2008/06/14 · openalex publication_date 2008/07/30 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We present the results of a deep radio observation of the globular cluster NGC 2808. We show that there are no sources detected within the core of the cluster, placing constraints on both the pulsar population of the cluster and the mass of a possible intermediate-mass black hole in NGC 2808. We compare the results for this cluster with other constraints on intermediate-mass black holes derived from accretion measures. With the exception of G1 in M 31 which has previously shown radio emission, even with considerably more conservative assumptions, only the clusters with the poorest of observational constraints are consistent with falling on the MBH–σ relation. This result is interpreted in terms of the fundamental differences between galaxies and globular clusters.