Does the
BLR obey the Virial Theorem?
•Four well studied AGNs, RM of multiple emission lines shows the expected relationship (slope = -2) between time lags and velocities (note each of the three will have different central black hole masses).
•NGC7469: 8.4x106 M☼
•NGC3783: 8.7x106 M☼
•NGC5548: 5.9x107 M☼
•3C 390.3: 3.2x108 M☼
Onken & Peterson
(2002)
