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The accretion mechanism producing the short flares observed from theSupergiant Fast X-ray Transients (SFXT) is still highly debated and forms amajor part in our attempts to place these X-ray binaries in the wider contextof the High Mass X-ray Binaries.  We report on a 216 ks INTEGRAL observation of the SFXT IGR J16328-4726(August 24-27, 2014) simultaneous with two fixed-time observations with XMMNewton (33ks and 20ks) performed around the putative periastron passage, inorder to investigate the accretion regime and the wind properties during thisorbital phase. During these observations, the source has shown luminosityvariations, from 4x10^{34} erg/s to 10^{36} erg/s, linked to spectralproperties changes. The soft X-ray continuum is well modeled by a power lawwith a photon index varying from 1.2 up to 1.7 and with high values of thecolumn density in the range 2-4x10^{23}/cm^2. We report on the presence of ironlines at 6.8-7.1 keV suggesting that the X-ray flux is produced by accretion ofmatter from the companion wind characterized by density and temperatureinhomogeneities.

The XMM Newton and INTEGRAL observations of the supergiant fast X-ray transient IGR J16328-4726