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- W2949722511 abstract "G272.2-3.2 is a supernova remnant (SNR) characterized by an apparent centrally brightened X-ray morphology and thermally dominated X-ray emission. Because of this combination of Sedov-type (thermal emission) and non-Sedov-type (non-shell-like morphology) features, the remnant is classified as a thermal composite SNR. This class of remnant is still poorly understood, in part because of the difficulties in modeling accurately all the physical conditions which shape the emission morphology. This paper presents a combined analysis of data from the ASCA and ROSAT satellites coupled with previous results at other wavelengths. We find that the X-ray emission from G272.2-3.2 is best described by a nonequilibrium ionization (NEI) model with a temperature around 0.70 keV, an ionization timescale of 3200 cm-3 yr, and a relatively high column density (NH ~ 1022 atoms cm-2). We look into the possible explanations for the apparent morphology of G272.2-3.2 using several models (among which are both cloud evaporation and thermal conduction models). For each of the models considered, we examine all the implications on the evolution of G272.2-3.2." @default.
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- W2949722511 date "2001-05-10" @default.
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- W2949722511 title "A New<i>ASCA</i>and<i>ROSAT</i>Study of the Supernova Remnant G272.2−3.2" @default.
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- W2949722511 doi "https://doi.org/10.1086/320577" @default.
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