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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Suzaku Observation of G359.79-0.26,a New Supernova Remnant Candidate in the Galactic Center
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Suzaku Observation of G359.79-0.26,a New Supernova Remnant Candidate in the Galactic Center

机译：朱雀观测银河中心超新星残留候选物G359.79-0.26

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摘要

Utilizing Suzaku observations, we obtained the X-ray spectrum of G359.79-0.26, an extended X-ray featurenearby the Galactic center (GC) supernova remnant (SNR) SgrA East. We estimated the contribution from theGalactic center diffuse X-rays, which allows us a proper background subtraction from the faint extended source.A thin thermal plasma with a temperature of kT_e~1 keV and slightly enhanced metal abundances (S and Ar) arerequired to reproduce the G359.79-0.26 spectrum. The absorption column density (N_H~4x10~(22)cm~(-2)) associatedwith the plasma indicates that G359.79-0.26 is located in the GC. The thermal energy of the plasma is estimatedto be 1.7 x 10~(50)erg, typical for galactic SNRs. Its center-filling X-ray emission surrounded by a shell-like radiostructure suggests that G359.79-0.26 would be a new member of the mixed-morphology SNR class. The 2.45 keVmosaic image covering a ~ 40' x 40' GC field implies an alternative possibility that G359.79-0.26 might be a partof a large ring-like structure with a size of 18' x 16'.
机译：利用朱雀的观测，我们获得了G359.79-0.26的X射线光谱，这是银河中心（GC）超新星残留（SNR）SgrA East附近的扩展X射线特征。我们估算了银河系中心漫射X射线的贡献，这使我们能够从微弱的扩展源中适当减去背景。需要复制温度为kT_e〜1 keV且金属丰度（S和Ar）略有增强的薄热等离子体G359.79-0.26光谱。与血浆相关的吸收柱密度（N_H〜4x10〜（22）cm〜（-2））表明G359.79-0.26位于GC中。等离子体的热能估计为1.7 x 10〜（50）erg，是银河SNR的典型值。它的中心填充X射线发射被壳状放射结构包围，表明G359.79-0.26将成为混合形态SNR类的新成员。覆盖约40'x 40'GC场的2.45 keVmosaic图像表明，G359.79-0.26可能是尺寸为18'x 16'的大型环状结构的一部分的另一种可能性。

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