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For a sample of nine Galactic globular clusters we measured the innerkinematic profiles with integral-field spectroscopy that we combined withexisting outer kinematic measurements and HST luminosity profiles. With thisinformation we are able to detect the crucial rise in the velocity-dispersionprofile which indicates the presence of a central black hole. In addition,N-body simulations compared to our data will give us a deeper insight in theproperties of clusters with black holes and stronger selection criteria forfurther studies. For the first time, we obtain a homogeneous sample of globularcluster integral- field spectroscopy which allows a direct comparison betweenclusters with and without an intermediate-mass black hole.

Intermediate-mass black holes in Globular Clusters