| BL Lac天体OJ 287的光学光变周期研究 |
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| 引用本文： | 徐云冰,张皓晶,王立恒.BL Lac天体OJ 287的光学光变周期研究[J].云南师范大学学报(自然科学版),2010,30(4):1-4. |
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| 作者姓名： | 徐云冰 张皓晶 王立恒 |
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| 作者单位： | 云南师范大学物理与电子信息学院,云南,昆明,650092 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 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。
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| 关 键 词： | BL Lac天体OJ 287 光变周期 功率谱方法 小波分析方法 |
A Study of the Light Curve Period of BL Lac OJ 287 |
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| XU Yun-bing,ZHANG Hao-jing,WANG Li-heng.A Study of the Light Curve Period of BL Lac OJ 287[J].Journal of Yunnan Normal University (Natural Sciences Edition),2010,30(4):1-4. |
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| Authors: | XU Yun-bing ZHANG Hao-jing WANG Li-heng |
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| Institution: | XU Yun-bing,ZHANG Hao-jing,WANG Li-heng(College of Physics and Electronics,Yunnan Normal University,Kunming 650092,China) |
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| Abstract: | 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. |
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| Keywords: | BL Lac Object OJ 287 period of light variation method of power spectrum wavelet analysis method |
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