论文标题
可能的$γ$ -Ray准周期性振荡$ \ sim $ 314天在Blazar OJ 287
A Possible $γ$-ray Quasi-periodic Oscillation of $\sim$ 314 days in the Blazar OJ 287
论文作者
论文摘要
我们报告发现可能$γ$ ray准周期振荡（QPO）在每月314天内大约314天，为0.1-300 GEV $γ$ -RARE {\ it fermi} -lat LaT LATAT LIGHT曲线，众所周知的Bl lac Blazar oj 287。 Lomb-Scargle周期图（LSP），RedFit和加权小波Z-Transform（WWZ）分析。我们简要地讨论了可以解释大型时期这种时期的$γ$ ray qpo的无线电大声主动银河核（AGN）的可能发射模型。在以前的研究中，伽马射线和MM-Radio发射之间的准平台无线电结的位置变化以及伽马射线和MM-Radio发射之间的强烈相关性表明，信号可能与这些结有关。
We report the detection of a probable $γ$-ray quasi-periodic oscillation (QPO) of around 314 days in the monthly binned 0.1 -- 300 GeV $γ$-ray {\it Fermi}-LAT light curve of the well known BL Lac blazar OJ 287. To identify and quantify the QPO nature of the $γ$-ray light curve of OJ 287, we used the Lomb-Scargle periodogram (LSP), REDFIT, and weighted wavelet z-transform (WWZ) analyses. We briefly discuss possible emission models for radio-loud active galactic nuclei (AGN) that can explain a $γ$-ray QPO of such a period in a blazar. Reports of changes in the position of quasi-stationary radio knots over a yearly timescale as well as a strong correlation between gamma-ray and mm-radio emission in previous studies indicate that the signal is probably associated with these knots.
