In the center of the Milky Way, as well as in many other galaxies, a compact star cluster around a very massive black hole is observed. One of the possible explanations for the formation of such Nuclear Star Clusters is based on the "merging" of globular clusters in the inner galactic potential well. By means of sophisticated N-body simulations, we checked the validity of this hypothesis and found that it may actually have been the one leading to the formation of the Milky Way Nuclear Star Cluster.
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Pfuhl et al. (2011) studied this question.
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