088054

We propose a Large Program of 10-day XMM-NuSTAR consecutive monitoring (30ks/day XMM 20 ks/day NuSTAR) triggered by Swift of a high-inclination BlackHole LMXB during the Hard-to-Soft transition. This will allow us tosimultaneously and accurately 1) determine the X-ray broadband spectral shapeand 2) detect the wind absorption lines. These are key ingredients to put firmconstraints on (a) the evolution of the wind physical properties with theaccretion state and (b) its possible association with the jet (thanks toproprietary simultaneous IR-Radio observations). [truncated! Please see actual data for full text]