Study of high Eddington accretion with the ultrafast outflow of NGC 1313 ULX-1

We propose a highresolution spectral and timing study of the emission andabsorption lines from the ultraluminous Xray source (ULX) NGC 1313 X1. With a750 ks XMMNewton observation (split into three epochs), we will quantify thegeometry and physical properties of the relativistic wind and its relation withthe accretion rate and radiative luminosity, solving a fundamental problem ofblack hole accretion. We will determine: a) the launching radius of the wind; b)the mass outflow rate and kinetic power; c) the ionisation structure of theemitting plasma; d) the optical thickness of the wind as a function of spectralhardness of the Xray continuum (a proxy for the viewing angle), which willdescribe the presence of orbital and superorbital periods and the accretion power of ULXs. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]