论文标题
检测具有高度相关的光学和X射线变化，ss cygni tomo-e gozen and更好
Detection of highly correlated optical and X-ray variations in SS Cygni with Tomo-e Gozen and NICER
论文作者
论文摘要
我们报告了与Tomo-e Gozen / 1.05 M Kiso Schmidt和Neutron Star Interior Coption Explorer（IT更好） / International Space Station（ISS）（ISS）的矮人Nova SS Cyg的同时光学和X射线观测。在静止状态下总共进行了四个观察结果，并检测到两个波长之间的高度相关的光变化。我们在光曲线中提取了局部亮度峰，并使用互相关函数评估了光学和X射线变化之间的时间滞后。一些镜头表现出明显的光学滞后X射线变化，其中大多数的正面范围从$+$+$ 0.26到3.11秒，这从未被检测到。 它们可能归因于X射线在积聚磁盘和/或次要恒星中的重新加工。由于定时准确性高，较高的吞吐量以及Tomo-e gozen的匹配能力，这是可能的。同样，可以证实，光学和X射线变化之间的相关性在我们的一个观察窗口之一的中间发生了变化，而X射线频谱柔和的柔和比2 keV随着相关性而变化。
We report on simultaneous optical and X-ray observations of the dwarf nova SS Cyg with Tomo-e Gozen/1.05 m Kiso Schmidt and Neutron star Interior Composition ExploreR (it NICER) / International Space Station (ISS). A total of four observations were carried out in the quiescent state and highly correlated light variations between the two wavelengths were detected. We have extracted local brightness peaks in the light curves with a binning interval of 1 sec, called `shots', and have evaluated time lags between the optical and X-ray variations by using a cross-correlation function. Some shots exhibit significant optical lags to X-ray variations and most of them are positive ranging from $+$0.26 to 3.11 sec, which have never been detected. They may be ascribable to X-ray reprocessing in the accretion disk and/or the secondary star. This analysis is possible thanks to the high timing accuracy and the high throughput of NICER and the matching capability of Tomo-e Gozen. Also, it is confirmed that the correlation between the optical and X-ray variations changed in the middle of one of our observation windows and the X-ray spectrum softer than 2 keV varied in accordance with the correlation.
