ROSAT X-ray observations of M81

We present results from the analysis of deep ROSAT HRI and PSPC observations of the spiral galaxy M81. The inferred total (0.5-2keV band) luminosity of M81 is ~3x10^40^ergs/s,...本研究呈现了螺旋星系M81的ROSAT（伦琴X射线天文卫星，Roentgen Satellite）HRI（高分辨率成像仪，High Resolution Imager）与PSPC（位置灵敏正比计数器，Position Sensitive Proportional Counter）深度观测数据的分析结果。推算得到的M81在0.5-2keV（千电子伏，kilo-electron Volt）能段的总光度约为3×10^40尔格每秒，……