M31 second ROSAT PSPC survey

This paper reports the results of the analysis of the second ROSAT PSPC survey of M 31 performed in summer 1992. We compare our results with those of the first survey, already...本论文报道了1992年夏季开展的第二次针对M31（梅西耶31）的ROSAT位置敏感正比计数器（Position Sensitive Proportional Counter, PSPC）巡天的分析结果。我们将本次研究结果与已有的首次巡天结果进行对比，……