Title: An X-ray emitting black hole in a globular cluster Authors: Thomas J. Maccarone (Southampton), Gilles Bergond (IAA/CAHA), Arunav Kundu (Michigan State), Katherine L. Rhode, John J. Salzer (Indiana), I Chun Shih, Stephen E. Zepf (Michigan State)
We present optical and X-ray data for the first object showing strong evidence for being a black hole in a globular cluster (NGC 4472). We show the initial X-ray light curve and X-ray spectrum which led to the discovery that this is an extremely bright, highly variable source, and thus must be a black hole. We present the optical spectrum which unambiguously identifies the optical counterpart as a globular cluster, and which shows a strong, broad [O III] emission line, most likely coming from an outflow driven by the accreting source.