Rosat observations of the Large Magellanic Cloud ( LMC ) show a large scale unbounded diffuse X - ray emission , as well as an enhanced emission within large shell structures . These observations allow the distribution of hot ionized medium in the LMC to be examined . Moreover , the hot interior of supernova shells and superbubbles , supernova remnants and the multi - phase structure of the interstellar medium ( ISM ) can be investigated .