Optical EVPA rotations in blazars: testing a stochastic variability model with RoboPol data
Optical EVPA rotations in blazars: testing a stochastic variability model with RoboPol data
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DOI：
10.1093/mnras/stx2167
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发表时间：
2017-12-01
影响因子：
4.8
通讯作者：
Liodakis, I.
中科院分区：
文献类型：
--
作者：
Kiehlmann, S.;Blinov, D.;Liodakis, I.
我们确定旋转的偏振角的样本中观察到的耀变体的三个赛季与RoboPol仪器。一个简单的随机变率模型进行测试，对这个样本的旋转事件。该模型能够产生与观测到的参数相似的旋转样本，但不能同时再现偏振分数。尽管我们既不能接受也不能最终拒绝该模型，但我们指出了观察结果的各个方面，这些方面与随机游走过程完全一致。
We identify rotations of the polarization angle in a sample of blazars observed for three seasons with the RoboPol instrument. A simplistic stochastic variability model is tested against this sample of rotation events. The model is capable of producing samples of rotations with parameters similar to the observed ones, but fails to reproduce the polarization fraction at the same time. Even though we can neither accept nor conclusively reject the model, we point out various aspects of the observations that are fully consistent with a random walk process.