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Highly Clumpy Structure of the Thermal Composite Supernova Remnant 3C391 Unveiled by Chandra | | Yang Chen
; Yang Su
; Patrick O. Slane
; & Q. Daniel Wang
; | | Date: |
2 May 2005 | | Subject: | astro-ph | | Affiliation: | NJU), Yang Su (NJU), Patrick O. Slane (CfA), & Q. Daniel Wang (UMass | | Abstract: | The nature of the internal thermal X-ray emission seen in ``thermal composite" supernova remnants is still uncertain. Chandra observation of the 3C391 shows a southeast-northwest elongated morphology and unveils a highly clumpy structure of the remnant. Detailed spatially resolved spectral analysis for the small-scale features reveals normal metal abundance and uniform temperature for the interior gas. The properties of the hot gas comparatively favor the cloudlet evaporation model as a main mechanism for the ``thermal composite" X-ray appearance, though radiative rim and thermal conduction may also be effective. A faint protrusion is found in Si and S lines out of the southwest radio border. | | Source: | arXiv, astro-ph/0505029 | | Services: | Forum | Review | PDF | Favorites | |
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