耀变天体3C 454.3高能光变行为的研究

发布时间：2018-05-11 03:08

  本文选题：C + .　； 参考：《广西大学学报(自然科学版)》2016年06期

【摘要】：为研究耀变天体3C 454.3高能光变行为,采用结构函数和离散关联函数法对该源近8年Fermi/LAT伽玛波段流量监测结果进行分析。结构函数分析表明:近8年的高能光变中存在多个特征光变时标,最小特征光变时标6 d;宁静态前后两段不同光变幅度的伽玛光变有类似变化趋势,均有最小特征光变时标6 d;整个光变存在可能周期230 d和350 d,与离散关联函数分析得到的周期223 d和351 d近似一致。根据周期分析理论,推断耀变天体3C 454.3伽玛波段光变存在周期(226±3.5)d和(250±0.5)d。与以前的研究结果对比,耀变体3C 454.3高能光变存在双周期是一个新发现。
[Abstract]:In order to study the high-energy light variation behavior of 3C 454.3 object, the structure function and discrete correlation function method are used to analyze the Fermi/LAT gamma-band flow monitoring results of the source in the last eight years. The structural function analysis shows that there are several characteristic light varying time scales in the last eight years, and the minimum characteristic light varying time scales are 6 days, and the gamma light changes with different light variation amplitude in the two sections before and after the static state have a similar trend. The existence of the whole phototransformer is likely to be 230 d and 350 d, which is approximately consistent with the 223d and 351d periods obtained by the discrete correlation function analysis. Based on the theory of periodic analysis, it is inferred that there are 2263.5d and 250 卤0.5d periods for 3C 454.3 gamma-band photovoltaics. Compared with the previous results, it is a new discovery that there exists a double period of 3C 454.3 high energy photovariances.
【作者单位】： 广西大学物理科学与工程技术学院广西大学—国家天文台天体物理和空间科学研究中心;广西大学广西相对论天体物理重点实验室;
【基金】：国家自然科学基金资助项目(11463001) 广西自然科学基金资助项目(2014GXNSFAA118024)
【分类号】：P157.7;P158
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本文编号：1872133