Physics
Scientific paper
Mar 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001rmxac..10...69k&link_type=abstract
The Seventh Texas-Mexico Conference on Astrophysics: Flows, Blows and Glows (Eds. William H. Lee and Silvia Torres-Peimbert) Rev
Physics
12
Black Hole Physics, Galaxies: Kinematics And Dynamics, Galaxies: Nuclei
Scientific paper
Dynamical searches find central dark objects, candidate supermassive black holes (BHs), in 22 galaxies. Their demographics lead to the following conclusions: (1) BH mass is consistent with predictions based on quasar energetics. (2) BH mass correlates with the luminosity of the ``bulge'' but not the disk component of the host galaxy. (3) BH mass correlates with the luminosity of the high-density central component in disk galaxies independent of whether this is a real bulge (a mini-elliptical) or a ``pseudobulge'' (believed to form via inward transport of disk material). (4) BH results increasingly support the hypothesis that the major event that forms a giant elliptical and the main AGN phase of the BH are the same event. Issues that need further work include: (i) BH masses from reverberation mapping are a factor of ~ 5 smaller than those from detailed dynamical studies. Contributing factors are identified that suggest that this discrepancy may not be fundamental. (ii) Do any bulges or ellipticals lack BHs? Are there BHs in pure disk galaxies? (iii) We need to know whether some of the mass detected in dynamical studies is in dark clusters of objects and not in BHs.
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