Аннотация:We report on X-ray observations of the supernova remnant 0509-67.5 in
the Large Magellanic Cloud with XMM-Newton. The Reflective Grating
Spectrometer (RGS) data show that the remnant has a very high expansion
velocity of 6000 km/s. The imaging spectroscopy data (EPIC) show that
the remnant has an asymmetric ejecta structure: the bright southwest
region of the remnant shows an overabundance of Si, S, Fe. This could be
a sign of an asymmetric explosion or it could be the result of a density
enhancement of the ISM in the Southwest. In addition to the data
analysis we also present an hydrodynamical modeling of the remnant. The
simulations allow us to put some constraints on its basic parameters.