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Title:
Typing Supernova Remnants Using X-Ray Line Emission Morphologies
Authors:
Lopez, L. A.; Ramirez-Ruiz, E.; Badenes, C.; Huppenkothen, D.; Jeltema, T. E.; Pooley, D. A.
Affiliation:
AA(Department of Astronomy and Astrophysics, University of California Santa Cruz, 159 Interdisciplinary Sciences Building, 1156 High Street, Santa Cruz, CA 95064, USA ; NSF Graduate Research Fellow; ), AB(Department of Astronomy and Astrophysics, University of California Santa Cruz, 159 Interdisciplinary Sciences Building, 1156 High Street, Santa Cruz, CA 95064, USA ), AC(Department of Astrophysical Sciences, Princeton University Peyton Hall, Ivy Lane, Princeton, NJ 08544, USA ), AD(Astronomical Institute, "Anton Pannekoek," University of Amsterdam, P.O. Box 94249, 1090 GE Amsterdam, Netherlands ), AE(UCO/Lick Observatories, 1156 High Street, Santa Cruz, CA 95064, USA ), AF(Astronomy Department, University of Wisconsin, 475 North Charter Street, Madison, WI 53706, USA )
Publication:
The Astrophysical Journal Letters, Volume 706, Issue 1, pp. L106-L109 (2009). (ApJL Homepage)
Publication Date:
11/2009
Origin:
IOP
ApJ Keywords:
methods: data analysis, supernova remnants, supernovae: general, X-rays: ISM
DOI:
10.1088/0004-637X/706/1/L106
Bibliographic Code:
2009ApJ...706L.106L

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.
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