蛇夫座RS的夜间闪烁：III。分尺度的准周期模及其演化
Intra-night flickering of RS Ophiuchi: III. Modes of quasi-periods in the minute scale and their evolution
摘要：
我们利用5台望远镜拍摄的58条监测光变曲线（LC）研究了周期新星RS Oph的光度行为。所有LC都显示出重复的时间结构，在从分钟到小时的时间尺度上具有一些准周期（QP）。在我们之前的工作中，通过结构函数的局部极小值和自关联函数的局部极大值，在LC中检测到了97个QP。QP的分布显示了8、13、21、30、48和73 min的模式，其中8 min的模式显示不佳。这些模式遵循以$1.55\approx 3/2$为基础的幂函数，标准差为4.7%。该功能还预测5.3和3.5 min时的模式，这些模式在完整MLC中未检测到。在目前的工作中，我们分析了简单的小零件，从高分辨率液晶。我们确认的QP模式在8.0，5.3和3.5分钟。一般来说，我们发现8 QP模式与规则的对数分布在时间间隔3.5-73分钟。我们还显示了典型的夜间演变的QP模式在分钟尺度-从一个QP模式到其他的急剧或逐渐过渡。最后，我们发现在短时间尺度下，局部的LC实现了整体LC的性质。这导致了两个很好的发音之间的依赖关系的范围偏差和标准偏差的LC，以及准周期和相关水平的密度函数的LC。
英文摘要：
We study the photometric behavior of the recurrent nova RS Oph by 58 monitoring light curves (LCs), taken by 5 telescopes. All LCs show repeating time structures with some quasi-periods (QPs) in time scales from minutes to hours. In our previous work 97 QPs were detected in the LCs by local minimums of structure functions and local maximums of auto-correlation functions. The distribution of the QPs shows modes at 8, 13, 21, 30, 48 and 73 min, where the mode at 8 min is poorly unveiled. These modes follow a power function with base $1.55\approx 3/2$ with standard deviation 4.7%. This function predicts modes also at 5.3 and 3.5 min, which are not detected in the full MLCs. In the present work we analyze simple small parts from high resolution LCs. We confirm the QPs modes at 8.0, 5.3 and 3.5 min. Generally, we found 8 QP modes with regular logarithmic distribution in the time interval 3.5-73 min. We also show typical intra-night evolutions of QP modes in the minute scale -- sharp or gradual transitions from one QP mode to other. In the end we find that the parts of the LCs carry out the properties of the whole LCs at short time scale. This lead to two well pronounces dependences - between the range deviation and standard deviation of the LC, as well as between the quasi-period and the relevant level of the density function of the LC.
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