| BL Lac天体S5 0716+714的光变周期特性研究 |
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| 引用本文： | 张皓晶,张雄. BL Lac天体S5 0716+714的光变周期特性研究[J]. 物理学报, 2007, 56(7): 4305-4311 |
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| 作者姓名： | 张皓晶 张雄 |
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| 作者单位： | (1)云南师范大学物理系，昆明 650092; (2)中国科学院国家天文台，北京 100012 |
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| 摘 要： | 从大量文献资料中, 收集了BL Lac天体S5 0716+714光学B，V，R，I波段的有效观测数据点共16818个， 获得了从1994年至2006年的长期光变曲线，光变曲线表明S5 0716+714天体存在完整的非正弦变化并且它的活动非常剧烈. 用功率谱方法分析了S5 0716+714天体的光变周期, 结果表明S5 0716+714天体存在的长光变周期为1.1年，Raiteri等人发现的3.3年周期可能是1.1年周期的叠合. 预期在2007年2月应该为S5 0716+714天体的再次爆发期.关键词：BL Lac天体S5 0716+714光变周期功率谱方法
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| 关 键 词： | BL Lac天体S5 0716+714 光变周期 功率谱方法 |
| 文章编号： | 1000-3290/2007/56(07)/4305-07 |
| 收稿时间： | 2006-10-11 |
| 修稿时间： | 2006-10-11 |
A study of the light curve periodic behavior of BL Lac object S5 0716+714 |
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| Zhang Hao-Jing,Zhang Xiong. A study of the light curve periodic behavior of BL Lac object S5 0716+714[J]. Acta Physica Sinica, 2007, 56(7): 4305-4311 |
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| Authors: | Zhang Hao-Jing Zhang Xiong |
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| Affiliation: | National Astronomical Observatory, Chirtese Academy of Sciences, Beijing 100012, China;Department of Physics , Yunnan Normal University , Kunming 650092, China |
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| Abstract: | From a large volume of literature we have collected a total of 16818 datapoints of effective observation of BL Lac object S5 0716+714 in the optical band, and constructed its long-term light curve from 1994 to 2006 AD. The light curve shows that S5 0716+714 is very active and exhibits very complicated non-sinusoidal variations. We used power spectrum method to analyze the period of light curve variation. Our results show that the long-term period of variation is 1.1 year. Time of coincidence is possible, Raiteri et al. have found the period of 3.3 year, which may be a multiple of 1.1-year periods. We expect next burst in 2006 July. |
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| Keywords: | BL Lac object S5 0716+714 light curve variation period method of power spectrum |
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