Research of Galactic Diffuse X-Ray Sources

为了研究位于银河系平面和银河系隆起区的X射线扩散发射，我们分析了银河卫星扫描和指向观测所获得的数据。我们绘制了光学薄热等离子体中类氦铁产生的K线的强度图，证实了光学薄热等离子体沿星系平面的广泛分布。10-20keV能带的强度图与铁K线的强度图相似，因此在银河系的大部分区域也发现了非热X射线。G344.7-0.1的X射线光谱显示了来自温度约900万K的光学薄热等离子体的X射线发射和来自低电离铁的强发射线。ASCA银河系平面探测发现了几个不明的扩散硬X射线源。我们利用后续观测数据和射电强度图进行了详细的分析，发现扩散源是发射非热X射线的超新星遗迹的候选者。我们用Ginga分析了在银河系中心区发现的一个瞬时X射线源的数据。我们确定了它的天空位置。在几次实验中得到的X射线能谱无论是用复合化黑体模型还是用双温黑体模型都能很好地表示，并且光谱参数没有明显变化。

In order to investigate the diffuse X-ray emission located in the galactic plane and the galactic bulge region, we analyzed data obtained in scanning and pointing observations with the Ginga satellite. We made an intensity map of a K-line from a He-like iron in an optically thin hot plasma, and confirmed that the optically thin hot plasma has a wide distribution along the galactic plane. The intensity map in the 10-20 keV energy band is similar to that of the iron K-line, and hence the non-thermal X-rays are also found in the large part of the Galaxy.We analyzed ASCA data of supernova remnants detected in the X-ray band for the first time. The X-ray spectrum of G344.7-0.1 exhibited an X-ray emission from an optically thin hot plasma with a temperature of about 9 million K and a strong emission line from a low-ionized iron.The ASCA Galactic plane survey discovered several unidentified diffuse hard X-ray sources. We carried out detailed analysis using data of follow-up observations and a radio intensity map and found that the diffuse sources are candidates for supernova remnants emitting non-thermal X-rays.We analyzed data of a transient X-ray source discovered in the galactic center region with Ginga. We determined its sky position. The X-ray spectra obtained in the several occasions were well represented by either a comptonized blackbody model or a two-temperature blackbody model and the spectral parameters did not change significantly.