Dynamical friction on galactic center star clusters with a central intermediate-mass black hole

Numerical simulations of the dynamical friction suffered by a, Galactic center star cluster harboring an intermediate-mass black hole (IMBH) have been performed. Hansen & Milosavljevic recently suggested that the presence of an IMBH in the cluster core might stabilize the core against tidal disruption during the inspiral through dynamical friction, and thus might easily deliver young stars down to the central parsec. We find that the presence of an IMBH does lower the minimum initial core density required to transport young stars down to the central parsec, but this is possible only when the mass of the IMBH is at least similar to 10% of the total cluster mass.