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arXiv · 2305.03084

A Chandra X-ray Study of Supernova Remnant N63A in the Large Magellanic Cloud

E. Karagoz·N. Alan·S. Bilir·S. Ak
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Abstract

We perform extensive spectroscopy of the supernova remnant N63A in the Large Magellanic Cloud, using $\sim 43$ ks {\it Chandra} archival data. By analysing the spectra of the entire remnant, we determine the abundance distributions for O, Ne, Mg, Si, and Fe. We detect evidence of enhanced O and possibly Ne and Mg in some of the central regions which might indicate an asymmetric distribution of the ejecta. The average O/Ne, O/Mg, and Ne/Mg abundance ratios of the ejecta are in plausible agreement with the nucleosynthesis products from the explosion of a $\sim40$ $M_{\odot}$ progenitor. We estimate an upper limit on the Sedov age of $\sim 5,400\pm200$ yr and explosion energy of $\sim 8.9\pm 1.6\times 10^{51}$ erg for N63A. We discuss the implications of our results for the morphological structure of the remnant, its circumstellar medium and the nature of the progenitor star.

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E. Karagoz, N. Alan, S. Bilir, S. Ak. 2023-05-04. A Chandra X-ray Study of Supernova Remnant N63A in the Large Magellanic Cloud. https://doi.org/10.1093/mnras/stad1389

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