论文标题
“宏伟的七个”孤立的中子星的深层观测
Deep eROSITA observations of the "magnificent seven" isolated neutron stars
论文作者
论文摘要
我们报告了对“宏伟的七个”隔离中子星（INSS）的深层监测的初步结果。由于高计数统计数据和良好的能量分辨率的结合，Erosita数据集推出了这些大概简单的热发射器的日益复杂的能量分布。对于三个目标，我们报告了检测多个（在某些情况下，相位依赖性的）光谱吸收特征和与主要热连续性的偏差的检测。对于两个INSS，还观察到了光谱状态和时机行为的意外长期变化。结果提出了有关变异性质和吸收特征性质的挑战性问题，并最终影响了高度磁性中子星的大气建模和冷却。
We report the initial results of deep eROSITA monitoring of the "magnificent seven" isolated neutron stars (INSs). Thanks to a combination of high count statistics and good energy resolution, the eROSITA datasets unveil the increasingly complex energy distribution of these presumably simple thermal emitters. For three targets, we report the detection of multiple (in some cases, phase-dependent) spectral absorption features and deviations from the dominant thermal continuum. Unexpected long-term changes of spectral state and timing behaviour have additionally been observed for two INSs. The results pose challenging theoretical questions on the nature of the variations and absorption features and ultimately impact the modeling of the atmosphere and cooling of highly magnetised neutron stars.
