ASCA observations of supernova remnants.

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Supernova Remnants: X Rays

Scientific paper

The combined spectral and imaging capabilities of ASCA has made available new ways of studying supernova remnants. The most powerful of these are spatially-resolved, moderate resolution spectroscopy and narrow band spectral imaging. Use of these techniques has yielded a number of results that challenge the current view of X-ray emission processes in supernova remnants. Evidence has been found for plasmas in which a different ionization timescale must be used to characterize each metal; the spatial distribution of ejecta in some young supernova remnants appears stratified, while it appears well mixed in others; at least one remnant (SN 1006) shows clear evidence for acceleration of particles to very high energy within the front. The author highlights some of the most recent results on supernova remnants from ASCA, featuring the remnants E 0102-72, SN 1006, RCW 103, and Pup A.

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