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Winds outflowing from Active Galactic Nuclei (AGNs) may carry significantamount of mass and energy out to their host galaxies. In this paper we reportthe detection of a sub-relativistic outflow observed in the Narrow Line Seyfert1 Galaxy IRAS17020+4544 as a series of absorption lines corresponding to atleast 5 absorption components with an unprecedented wide range of associatedcolumn densities and ionization levels and velocities in the range of23,000-33,000 km/s, detected at X-ray high spectral resolution (E/Delta E~1000) with the ESA's observatory XMM-Newton. The charge states of the materialconstituting the wind clearly indicate a range of low to moderate ionizationstates in the outflowing gas and column densities significantly lower thanobserved in highly ionized ultra fast outflows. We estimate that at least oneof the outflow components may carry sufficient energy to substantially suppressstar formation, and heat the gas in the host galaxy. IRAS17020+4544 providestherefore an interesting example of feedback by a moderately luminous AGNhosted in a spiral galaxy, a case barely envisaged in most evolution models,which often predict that feedback processes take place in massive ellipticalgalaxies hosting luminous quasars in a post merger phase.

X-ray high-resolution spectroscopy reveals feedback in a Seyfert galaxy from an ultra fast wind with complex ionization and velocity structure