| A Narrow Band Chandra X-ray Analysis of SNR 3C 391 |
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| 作者姓名： | Yang Su and Yang Chen |
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| 作者单位： | Yang Su and Yang Chen Department of Astronomy，Nanjing University，Nanjing 210093; |
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| 基金项目： | Supported by the National Natural Science Foundation of China. |
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| 摘 要： | We present narrow-band and equivalent width (EW) images of the thermal composite supernova remnant (SNR) 3C 391 in the X-ray emission lines of Mg, Si and S using the Chandra ACIS Observational data. The EW images reveal the spatial distribution of the emission of the metal species Mg, Si and S in the remnant. They have a clumpy structure similar to that seen in the broadband diffuse emission, suggesting that they are largely of interstellar origin. We find an interesting finger-like feature protruding outside the southwestern radio border of the remnant, somewhat similar to the jet-like Si structure found in the famous SNR Cas A. This feature may possibly be the debris of the jet of ejecta from an asymmetrical supernova explosion of a massive progenitor star.
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| 关 键 词： | SNR 超新星 X射线 起源 |
A Narrow Band Chandra X-ray Analysis of SNR 3C 391 |
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| Yang Su and Yang Chen.A Narrow Band Chandra X-ray Analysis of SNR 3C 391[J].Chinese Journal of Astronomy and Astrophysics,2005,5(4):412-418. |
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| Authors: | Yang Su Yang Chen |
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| Institution: | Department of Astronomy, Nanjing University, Nanjing 210093 |
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| Abstract: | We present narrow-band and equivalent width (EW) images of the thermal composite supernova remnant (SNR) 3C 391 in the X-ray emission lines of Mg, Si and S using the Chandra ACIS Observational data. The EW images reveal the spatial distribution of the emission of the metal species Mg, Si and S in the remnant. They have a clumpy structure similar to that seen in the broadband diffuse emission, suggesting that they are largely of interstellar origin. We find an interesting finger-like feature protruding outside the southwestern radio border of the remnant, somewhat similar to the jet-like Si structure found in the famous SNR Cas A. This feature may possibly be the debris of the jet of ejecta from an asymmetrical supernova explosion of a massive progenitor star. |
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| Keywords: | ISM: supernova remnants - X-rays: ISM - X-rays: individual (3C 391) - ISM: lines and bands |
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