XMM-RGS Spectroscopy of the Magellanic Cloud Supernova Remnant Sample.

GT We propose to observe a sample of the supernova remnants in the MagellanicClouds. The sample is comprised of E010272.3, N49, N103B, PSR054069.3 and 051969.0. These SNRs form a biased sample of the SNR population (they are drawn from the brighter and smaller ends of the distribution), but the sample spans the spectrum of origin, age and dynamical conditions: Two are type Ia, two are type II (one with a pulsar) and the other is evolved and containing a known soft gamma repeater. This set, studied using the RGS, promises unambiguous spectra and line diagnostics that provide strong clues that address the composition and physical state of the interstellar medium withinthe MCs, as well as that of the ejected stellar material. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]