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2009 ApJ 706 L106-L109 doi: 10.1088/0004-637X/706/1/L106
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ABSTRACT. We present a new observational method to type the explosions of young supernova remnants (SNRs). By measuring the morphology of the Chandra X-ray line emission in 17 Galactic and Large Magellanic Cloud SNRs with a multipole expansion analysis (using power ratios), we find that the core-collapse SNRs are statistically more asymmetric than the Type Ia SNRs. We show that the two classes of supernovae can be separated naturally using this technique because X-ray line morphologies reflect the distinct explosion mechanisms and structure of the circumstellar material. These findings are consistent with recent spectropolarimetry results showing that core-collapse supernovae explosions are intrinsically more asymmetric.
Key words: methods: data analysis; supernova remnants; supernovae: general; X-rays: ISM
Print publication: Issue 1 (2009 November 20) |
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