Mathematics – Logic
Scientific paper
Sep 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011head...12.3405y&link_type=abstract
American Astronomical Society, HEAD meeting #12, #34.05
Mathematics
Logic
Scientific paper
We present the Suzaku spectroscopic studies of the supernova remnant (SNR) G344.7-0.1. The X-ray spectrum of the entire SNR is well represented by two components of thin thermal plasmas with different ionization timescales of 2 × 1011 cm-3s and 1 × 1010 cm-3s. The Fe-K emission is reproduced by the latter component and shows an enhanced abundance relative to the solar value, suggesting that the Fe ejecta were heated more recently than the other lighter elements. The abundances of various elements are independently determined for the first time. We find that the abundance pattern is highly consistent with that expected for Type Ia SNR. This result argues against the recent claim of the core-collapse origin suggested from its morphological feature (Lopez et al. 2011, ApJ 732, 114). In addition, we have detected the emission from He-like Al at 1.6 keV, which is the first clear detection of this element in the spectrum of an X-ray source. The enhancement of the Al/Mg abundance ratio from the solar value indicates the relatively high metallicity of the ambient interstellar medium.
Katsuda Satoru
Maeda Kengo
Smith Randall K.
Tanaka Masao
Yamaguchi Hiroya
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