Mapping spectral lines from the diffuse Galactic soft X-ray background

The dominant features of the diffuse soft Xray background (SXRB) at 0.75 keVare associated with the Galactic bulge and Loop I. The available spectral datafrom this diffuse flux have very poor signal to noise and are confused withother sources. XMM provides a unique opportunity to gather high resolution (CCD) spectra with good statistics from the galactic SXRB without confusion.Mapping spectral line differences as a function of Galactic coordinates willhelp elucidate the origin, state and structure of the diffuse, hot material.The results will be invaluable in the interpretation of the diffuse backgroundseen in many XMM target fields. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]