“…Density profiles of galactic nuclei.-Direct observational constraints on the stellar density within the sphere of influence of MBHs with masses in the LISA range exist only for the Milky Way [4,85,119,122,123,199,206,251,283] and M 32 [188]. Even in these cases the interpretation of the (projected) surface brightness or number counts in terms of stellar density is a difficult and uncertain matter, mostly because these observations are dominated by bright stars whose distribution probably does not trace that of the compact remnants [5].…”