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首页> 外文期刊>The Astrophysical journal >X-RAY-EMITTING EJECTA IN PUPPIS A OBSERVED WITH SUZAKU
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X-RAY-EMITTING EJECTA IN PUPPIS A OBSERVED WITH SUZAKU

机译:SUZAKU观察到的X射线放射出的乳牛子宫

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We report the detection and localization of X-ray-emitting ejecta in the middle-aged Galactic supernova remnant Puppis A using five observations with the Suzaku X-Ray Imaging Spectrometer to survey the eastern and middle portions of the remnant. A roughly 3' × 5', double-peaked region in the north center is found to be highly enriched in Si and other elements relative to the rest of the remnant. The X-ray-fitted abundances are otherwise well below the solar values. While the ejecta-enhanced regions show some variation of relative element abundances, there is little evidence for a very strong enhancement of one element over the others in the imaged portion of the remnant, except possibly for a region of O and Ne enhancement in the remnant's south center. There is no general spatial correlation between the compact [O Ⅲ]-emitting ejecta knots seen optically and the abundance enhancements seen in X-rays, although they are located in the same vicinity. The map of fitted column density shows strong variations across the remnant that echo earlier X-ray spectral hardness maps. The ionization age (as fitted for single-temperature models) is sharply higher in a ridge behind the northeast-east boundary of the remnant, and is probably related to the strong molecular cloud interaction along that boundary. The temperature map, by comparison, shows relatively weak variations.
机译:我们报告了使用Suzaku X射线成像光谱仪的五个观测值对中年银河超新星残骸Puppis A中发射X射线的射血的探测和定位,以调查残骸的东部和中部。在北中心,大约有3'×5'的双峰区域,与其余的其余部分相比,富含硅和其他元素。 X射线拟合的丰度远低于太阳值。虽然射血增强的区域显示出相对元素丰度的某些变化,但几乎没有证据表明在残留物成像部分中一种元素比其他元素具有非常强的增强作用,可能是残留物中O和Ne增强的区域南中心。在光学上观察到的紧凑的[OⅢ]发射顶结与X射线中的丰度增强之间没有普遍的空间相关性,尽管它们位于相同的附近。拟合柱密度图显示了残留物之间的强烈变化,这些变化回波了早期的X射线光谱硬度图。在剩余物东北边界后方的一个山脊中,电离年龄(适用于单温度模型)明显更高,这可能与沿该边界的强烈分子云相互作用有关。相比之下,温度图显示相对较弱的变化。

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