Masses of Black Holes in Active Galactic Nuclei

Abstract

We present a progress report on a project whose goal is to improve both the precision and accuracy of everberation-based black-hole masses. Reverberation masses appear to be accurate to a factor of about three, and the black-hole mass/bulge velocity dispersion relationship appears to be the same in active and quiescent galaxies.

4 pages, 1 figure. To be published in "Active Galactic Nuclei: from Central Engine to Host Galaxy", ed. S. Collin, F. Combes, and I. Shlosman