Diagram of the disk wind in NGC 5548 (not to scale). The BH is surrounded by the accretion disk. At larger radii the BLR is indicated by orange/red turbulent clouds. The disk wind rises nearly vertically from the surface of the accretion disk, where it has a dense, high-column-density base. At higher elevations, radiation pressure accelerates the wind and bends the streamlines down along the 30° inclination of the observer’s LOS to the rotation axis of the disk (Kaastra et al. 2014).