Research of Galactic Diffuse X-Ray Sources

为了研究银河系平面和星系凸起区域的漫射x射线辐射，我们分析了Ginga卫星扫描和指向观测的数据。我们在光学薄的热等离子体中绘制了类氦铁的k线强度图，并证实了光学薄的热等离子体沿银河系平面具有广泛的分布。在10-20 keV波段的强度图与铁的k线相似，因此在银河系的大部分地区也发现了非热x射线。我们首次分析了在x射线波段探测到的超新星残骸的ASCA数据。G344.7-0.1的x射线光谱显示出来自温度约为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银河面巡天发现了几个不明的漫射硬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，发现漫射源是超新星残骸发射非热x射线的候选者。我们分析了在银河系中心区域发现的瞬态x射线源的数据。我们确定了它在天空中的位置。多次观测得到的x射线光谱，无论是复合黑体模型还是双温黑体模型都能很好地表示，光谱参数变化不大。

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.