| 0716+714的长期光变和色指数变化 |
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| 引用本文： | 胡绍明,李冀,郭皞岩. 0716+714的长期光变和色指数变化[J]. 河北师范大学学报(自然科学版), 2006, 30(5): 546-549 |
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| 作者姓名： | 胡绍明 李冀 郭皞岩 |
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| 作者单位： | 山东大学(威海分校)空间科学与应用物理系,山东,威海,264209;中国科学院,国家天文台,北京,100012;河北师范大学,物理科学与信息工程学院,河北,石家庄,050016;哈尔滨工业大学(威海分校)计算机科学与工程学院,山东,威海,264209 |
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| 摘 要： | 对收集的BL Lac天体0716 714长期大量的光学多波段数据进行了研究,得到了多波段光变曲线.对色指数的变化进行分析得出,0716 714的光变包括长期单色光变和短期有颜色变化的爆发2种成份.根据这种光变特性,对引起光变的物理机制进行了讨论,认为激波喷流模型加上几何效应的调制是目标光变的物理机制.
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| 关 键 词： | 光变 色指数 物理机制 |
| 文章编号： | 1000-5854（2006）05-0546-04 |
| 收稿时间： | 2006-04-10 |
| 修稿时间： | 2006-04-10 |
Long Period Variability and Color Indices Variability of 0716 + 714 |
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| HU Shao-ming,LI Ji,GUOHao-yan. Long Period Variability and Color Indices Variability of 0716 + 714[J]. Journal of Hebei Normal University, 2006, 30(5): 546-549 |
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| Authors: | HU Shao-ming LI Ji GUOHao-yan |
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| Affiliation: | 1. Department of Space Science and Applied Physics,Shandong University at Weihai,Shandong Weihai 264209,China;2. National Astronomical Observatories,Chinese Academy of Science,Beijing 100012,China;3. College of Physics Science and Information Engineering,Hebei Normal University,Hebei Shijiazhuang 050016,China; 4. College of Computer Science and Engineering,Harbin Institute of Technology at Weihai,Shandong Weihai 264209,China |
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| Abstract: | Lots of long period multi-band optical observations were collected.These data were studied extensively.The light curves were obtained.At the same time,the color indices were analyzed.It was concluded that the variability of 0716+714 contained the long term achromatic variability and chromatic short flares.The physical mechanism which induced variability was discussed.It was concluded that the shock-in-jet model modulated by geometrical effect might be the physical mechanism of the object's variability. |
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| Keywords: | variability color index physical mechanism |
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