XMM-Newton Proposal 03018603

Physics

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Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Sn 1978K, Sn 2004Dj, Xmm-Newton Proposal 03018603

Scientific paper

By observing the X-ray emission properties of young supernovae (SNe), physical key parameters such as the circumstellar matter (CSM) density, the mass-loss rate of the progenitor, and the temperature of the outgoing and reverse shock can be studied as a function of time. We propose follow-up observations of the brightest known X-ray emitting SNe (1978K, 1979C, 2004dj) to study the temperature evolution, establish the physical parameters of the ambient CSM out to radii of E18cm from the sites of the explosions, and to monitor the mass-loss rates over 10^4 years in the progenitors stellar wind history. Studying these key parameters as a function of time has never been done before.

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