Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-05-02
Chin.J.Astron.Astrophys. 5 (2005) 412
Astronomy and Astrophysics
Astrophysics
9 pages, 4 embedded figures, Chinese Journal of Astronomy and Astrophysics (ChJAA), in press
Scientific paper
10.1088/1009-9271/5/4/008
We present the narrow-band and the equivalent width (EW) images of the thermal composite supernova remnant (SNR) 3C391 for the X-ray emission lines of elements Mg, Si, & S using the Chandra ACIS Observational data. These EW images reveal the spatial distribution of the emission of the metal species Mg, Si, & S in the remnant. They have clumpy structure similar to that seen from 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, which is 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 which implies an asymmetrical supernova explosion of a massive progenitor star.
Chen Yang
Su Yang
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