Suzaku Observation of G359.79$-$0.26, a New Supernova Remnant Candidate in the Galactic Center
Suzaku Observation of G359.79$-$0.26, a New Supernova Remnant Candidate in the Galactic Center
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DOI：
10.1093/pasj/60.sp1.s183
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发表时间：
2008-02
影响因子：
2.3
通讯作者：
H. Mori;T. Tsuru;Y. Hyodo;K. Koyama;A. Senda
中科院分区：
文献类型：
--
作者：
H. Mori;T. Tsuru;Y. Hyodo;K. Koyama;A. Senda
利用朱雀观测，我们获得了G359.790.26的X射线谱，这是银河系中心（GC）超新星遗迹（SNR）SgrA East附近的扩展X射线特征。我们估计了银河系中心漫射X射线的贡献，这使我们能够从微弱的扩展源中进行适当的背景扣除。为了重现G359.790.26的光谱，需要一个温度为keV的薄热等离子体和稍微增强的金属丰度（S和Ar）。与血浆相关的吸收柱密度（cm）表明G359.790.26位于GC中。等离子体的热能估计为beerg，典型的星系SNRs。它的中心填充X射线发射被壳状射电结构包围，表明G359.790.26可能是混合形态SNR类的新成员。覆盖aGC场的2.45keV镶嵌图像暗示了另一种可能性，即G359.790.26可能是大小为的大型环状结构的一部分。
Utilizing Suzaku observations, we obtained the X-ray spectrum of G359.790.26, an extended X-ray feature nearby the Galactic center (GC) supernova remnant (SNR) SgrA East. We estimated the contribution from the Galactic center diffuse X-rays, which allows us a proper background subtraction from the faint extended source. A thin thermal plasma with a temperature ofkeV and slightly enhanced metal abundances (S and Ar) are required to reproduce the G359.790.26 spectrum. The absorption column density (cm) associated with the plasma indicates that G359.790.26 is located in the GC. The thermal energy of the plasma is estimated to beerg, typical for galactic SNRs. Its center-filling X-ray emission surrounded by a shell-like radio structure suggests that G359.790.26 would be a new member of the mixed-morphology SNR class. The 2.45keV mosaic image covering aGC field implies an alternative possibility that G359.790.26 might be a part of a large ring-like structure with a size of.