087082

2MASS 0918+2117 is a type 1.5 QSO at z=0.149. It was found to be unobscured in 2000 by Chandra comma obscured by Compton Thick material in 2003 by XMM and unobscured again by XMM in 2005 comma when there is evidence openParat 3sigmaclosePar of an absorption feature at 7 keV comma indicating a disk wind with velocity of vout=0.13c comma with poorly constrained physical parameters. A faster wind openParvout=0.3-0.4cclosePar may be present at 10 keV comma at the limit of the XMM response. These evidences suggest that the source was caught in an obscuration and following blow-out phase comma in which powerful AGN-driven winds sweep away the obscuring material around the SMBH. We propose to observe the source for 60ks with Nustar openParplus 50ks XMMclosePar to fully characterize the wind at all energies comma or study the absorber if the obscuration is recurrent.