High resolution X-ray spectroscopy of G292.0+1.8/MSH 11-54

We present a preliminary analysis of XMM-Newton observations of the oxygen-rich supernova remnant G292.0+1.8 (MSH 11-54). Although the spatial extent of the remnant is 8′ the bright central bar is narrow (1-2′) resulting in RGS spectra of a high spectral quality. This allows us to spectroscopically identify a cool, kTe=0.3 keV, and underionized component, resolve details of the Fe-L complex, and resolve the forbidden and resonant lines of the O VII triplet. We are also able to constrain the kinematics of the remnant using Ne IX as observed in the second order spectrum, and O VIII in the first order spectrum. We do not find evidence for O VII line shifts or Doppler broadening (σv<731 km s−1), but line broadening of the Ne X Lyα line seems to be present, corresponding to σv∼1500 km s−1.