论文标题
活跃的快速旋转器FR CNC的冠状
Coronae of an active fast rotator FR Cnc
论文作者
论文摘要
我们介绍了首次详细的X射线研究和同时对活跃的快速旋转星FR CNC进行光学观察。发现X射线光谱是通过两个温度的等离子体模型来解释的，温度分别为0.34和1.1 keV。发现0.5-2.0 keV能带中的X射线光曲线在旋转调制的程度上进行了旋转调节。我们还发现，X射线灯曲线与光学光和颜色曲线抗相关，从某种意义上说，最大X射线光对应于FR CNC表面上的最小光光和冷却器区域。在过去的30年中，发现FR CNC的X射线光度几乎是一致的，平均值为4.85x10^{29} erg/s在0.5-2.0 KEV能量带中。
We present the first detailed X-ray study and simultaneous optical observations of the active fast rotating star FR Cnc. The X-ray spectra are found to be explained by two-temperature plasma model with temperature of cool and hot components of 0.34 and 1.1 keV, respectively. The X-ray light curve in the 0.5 -- 2.0 keV energy band is found to be rotationally modulated with the degree of rotational modulation of ~17%. We have also found that the X-ray light curve is anti-correlated with the optical light and colour curves in the sense that maximum X-ray light corresponds to minimum optical light and cooler region on the surface of FR Cnc. The X-ray luminosity of FR Cnc is found to be almost consistent in the last 30 years with an average value of 4.85x10^{29} erg/s in the 0.5 -- 2.0 keV energy band.
