Powerful winds driven by active galactic nuclei (AGN) are often invoked to play a fundamental role in the evolution of both supermassive black holes (SMBHs) and their host galaxies. Additional support for this “wind feedback mode” came from recent X-ray observation of ultrafast outflows (UFOs) in several AGNs, and the increasing evidence for their connection with galaxy-scale molecular winds, suggesting a direct link between the SMBH and the gas out of which stars form. Spectroscopic observations, especially in the UV and X-ray band, suggest that such disk winds may be common in local AGN and quasars. However, there are still several open questions that need to be discussed: what is the relation between UFOs and WAs in X-rays? And with AGN winds observed in other wavebands? What about AGN jets? Are UFOs energetic enough to drive AGN feedback? Are there evidences for AGN wind feedback in action? In this talk I will address some of these topics, and I will also show how future multi-wavelength campaigns will provide revolutionary improvements in this field.
// by Adi