A wind-based unification model for NGC 5548: spectral holidays, non-disk emission, and implications for changing-look quasars

M. Dehghanian, G. J. Ferland, B. M. Peterson +9

The 180-day Space Telescope and Optical Reverberation Mapping campaign on NGC 5548 discovered an anomalous period, the broad-line region (BLR) holiday, in which the emission lines…