论文标题
Blazar PKS 1222+216的两极分化光发射：发现420天的准周期信号
Polarized Optical Emission of the Blazar PKS 1222+216: Discovery of A 420-day Quasi-Periodic Signal
论文作者
论文摘要
我们报告了在长期光学和$γ$ ray数据中搜索Blazar PKS 〜1222+216的$γ$ ray数据，其中数据来自管家天文台的Blazar监视计划，以及全天候的调查，该调查均具有大面积望远镜的范围{\ It fermi Gamma-Ray-Ray-Ray-Ray Space Telescope}。 $ \ simeq $ 420 \，天数及$>5σ$的时期信号在源的光学线性极化度的测量中找到，而光学的光学线性极化度则没有类似的信号，并且在$γ$ - 射线的光曲线均覆盖了大约相同的$ \ sim $ 10 \ sim $ sim $ sim，yr。我们通过应用螺旋喷气模型来研究准周期变化，并发现该模型可以提供良好的解释。这项工作表明，极化法可以是揭示物理特性的强大工具，特别是从银河超级质量黑洞中的磁场配置。
We report our search for quasi-periodic signals in long-term optical and $γ$-ray data for the blazar PKS~1222+216, where the data are from the Steward Observatory blazar monitoring program and the all-sky survey with the Large Area Telescope onboard the {\it Fermi Gamma-ray Space Telescope}, respectively. A quasi-periodic signal, with a period of $\simeq$420\,days and a significance of $>5σ$, is found in the measurements of the optical linear polarization degree for the source, while no similar signals are found in the optical and $γ$-ray light curves covering approximately the same time period of $\sim$10\,yr. We study the quasi-periodic variations by applying a helical jet model and find that the model can provide a good explanation. This work shows that polarimetry can be a powerful tool for revealing the physical properties, in particular the configuration of the magnetic fields of jets from galactic supermassive black holes.
