Typing Supernova Remnants Using X-ray Line Emission Morphologies

Details Typing Supernova Remnants Using X-ray Line Emission Morphologies Typing Supernova Remnants Using X-ray Line Emission Morphologies

2009-10-19

arxiv.org/abs/0910.3208v1

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

4 pages, 1 figure, accepted for publication in ApJL

Scientific paper

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 seventeen 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 SNe are intrinsically more asymmetric.

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