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Galaxy merging is widely accepted to be a key driving factor in galaxyformation and evolution, while the feedback from AGN is thought to regulate theBH-bulge coevolution and the star formation process. In this context, wefocused on 1SXPSJ050819.8+172149, a local (z=0.0175) Seyfert 1.9 galaxy(L_bol~4x10^43 ergs/s). The source belongs to an IR-luminous interacting pairof galaxies, characterized by a luminosity for the whole system (due to thecombination of star formation and accretion) of log(L_IR/L_sun)=11.2. Wepresent the first detailed description of the 0.3-10keV spectrum of1SXPSJ050819.8+172149, monitored by Swift with 9 pointings performed in lessthan 1 month. The X-ray emission of 1SXPSJ050819.8+172149 is analysed bycombining all the Swift pointings, for a total of ~72ks XRT net exposure. Theaveraged Swift-BAT spectrum from the 70-month survey is also analysed. Theslope of the continuum is ~1.8, with an intrinsic column density NH~2.4x10^22cm-2, and a deabsorbed luminosity L(2-10keV)~4x10^42 ergs/s. Our observationsprovide a tentative (2.1sigma) detection of a blue-shifted FeXXVI absorptionline (rest-frame E~7.8 keV), suggesting the discovery for a new candidatepowerful wind in this source. The physical properties of the outflow cannot befirmly assessed, due to the low statistics of the spectrum and to the observedenergy of the line, too close to the higher boundary of the Swift-XRT bandpass.However, our analysis suggests that, if the detection is confirmed, the linecould be associated with a high-velocity (vout~0.1c) outflow most likelylaunched within 80r_S. To our knowledge this is the first detection of apreviously unknown ultrafast wind with Swift. The high NH suggested by theobserved equivalent width of the line (EW~ -230eV, although with largeuncertainties), would imply a kinetic output strong enough to be comparable tothe AGN bolometric luminosity.

AGN feedback in action: a new powerful wind in 1SXPSJ050819.8+172149?