间隙时间序列谱分析方法的检验及其在激变变星短周期振荡分析中的应用

A TEST FOR THE SPECTRAL ANALYSIS OF GAPPED TIME SERIES AND ITS APPLICATION IN ANALYSING THE SHORT PERIOD OSCILLATIONS OF CATACLYSMIC VARIABLES

本文对具有或长或短间隙（gap）的时间序列的谱分析方法进行研究，给出递推公式，并且用模拟信号进行检验，证实这个方法的可靠性．并把它应用到激变变星V795Her和激变前变星HWVir的短周期振荡分析中，结果表明这两颗变星都有明显的闪变，在V795Her中还存在周期为265.91s和116.70s的振荡．

In this paper we discuss the spectral analysis of gapped time series, set up therecurrence formulae and test the method with modelling signals. We have thusconfirmed the reliability of the method. It has been applied to the analyses of theshort period oscillations in ctalysmic variable V795 Her and pre-cataclysmic variableHW Vir. The oscillations with periods of 265.91s and 116.70s have been found inV795 Her.