Optical variability of blazars
Optical variability of blazars
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DOI：
10.1002/asna.201913603
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发表时间：
2019-06
影响因子：
0.9
通讯作者：
H. Abrahamyan;A. Mickaelian;G. Paronyan;G. Mikayelyan
中科院分区：
文献类型：
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作者：
H. Abrahamyan;A. Mickaelian;G. Paronyan;G. Mikayelyan
通过对BZCAT数据的分析，得出了它们不具有相同性质的结论。将一个天体列入星表的初步标准是强烈的射电辐射;然而，选择了两种类型的射电源：BL Lacertae（BLL）天体和平谱射电类星体（FSRQ）。由于耀变体具有一些典型的性质（强射电辐射、光学可变性、连续光谱、偏振、高光度等），利用光学资料，我们研究它们，以澄清哪些性质在它们作为耀变体的分类中起着最重要的作用。我们发现60%的耀变体具有光学可变性。我们使用基于POSS 1和POSS 2光度学开发的技术，并将可变性分为极端，强，中等和低等级。在光学范围内，51个耀变体具有强大的可变性（极端变量），126个是高变量。此外，63%的耀变体探测到X射线辐射，28%探测到伽马射线辐射。在分析和计算的基础上，给出了耀变体的平均统计特征。
The analysis of blazars' parameters from BZCAT leads to a conclusion that they do not have the same properties. The preliminary criterion to include an object in the catalog was the strong radio emission; however, two type of radio sources were selected: BL Lacertae (BLL) objects and Flat Spectrum Radio Quasars (FSRQ). As a number of properties are typical of blazars (strong radio emission, optical variability, continuum optical spectra, polarization, high luminosity, etc.), using the optical data, we investigate them to clarify which property plays the most significant role in their classification as blazars. We found that 60% of blazars have optical variability. We use a technique developed based on POSS1 and POSS2 photometry and group the variability into extreme, strong, medium, and low classes. In the optical range, 51 blazars have powerful variability (extreme variables), and 126 are high variables. In addition, 63% of blazars have detected radiation in X‐ray and 28% have detected radiation in gamma rays. We give the average statistical characteristics of blazars based on our analysis and calculations.