Preliminary results from a recent reverberation mapping campaign

We have completed observations for a 125-night reverberation mapping campaign to measure new or improved black hole masses in six AGNs. From these observations we can further constrain broad line region kinematics and improve the observed relation between the radius of the BLR and the AGN luminosity (the R−L relation), which allows us to accurately estimate black hole masses for large samples of AGNs. High-quality reverberation mapping datasets are difficult to obtain, as well-spaced observations over long timescales are required. Some reverberation campaigns in the past have not yielded satisfactory results due to inadequate time sampling; this campaign is part of a larger effort to improve the reverberation mapping database.