SMBH in nearby galaxies

Supermassive black holes reside in the nuclei of many (possibly all) galaxies, even inactive or weakly active (Kormendy & Richstone 1995; Magorrian et al. 1998)
Correlations between central SMBH masses and host galaxy properties (e.g. M- relation; Ferrarese & Merritt 2000, Gebhart et al. 2000) can be used to study local BH demographics in detail

Supermassive black holes reside in the nuclei of many (possibly all) galaxies, even inactive or weakly active (Kormendy & Richstone 1995; Magorrian et al. 1998)