摘要
从大量文献中收集了BL Blac天体OJ 287光学V波段30多年的观测数据,分析了光变周期。用两种不同的方法分析周期光变(功率谱方法及小波分析法),发现其光变曲线中存在7.06年和13.5年的周期,预期2020年秋将再次爆发。
In this paper, the authors have data of over 30 years in the V - band of the BL Lac OJ 287 and used this database to analyze periodicity＇signals in the optical light curve. Two different methods were applied： the Method of power spectrum and the wavelet analysis method. They revealed the existence of periods of 7.06 and 13.5years in the source variability. Based on second period , we can predict that the next outburst should be at its maximum Autumn 2020.
出处
《云南师范大学学报（自然科学版）》
2010年第4期1-4,共4页
Journal of Yunnan Normal University:Natural Sciences Edition
基金
国家自然科学基金资助项目(10663002
10763002)
关键词
BL
Lac天体OJ
287
光变周期
功率谱方法
小波分析方法
BL Lac Object OJ 287 , period of light variation , method of power spectrum , wavelet analysis method
