论文标题
BL LAC对象3FGL J0449.4-4350的伽马射线和光学可变性分析
The gamma-ray and Optical Variability Analysis of the BL Lac Object 3FGL J0449.4-4350
论文作者
论文摘要
我们已经在光学和伽马射线带上组装了BL LAC对象3FGL J0449.4-4350的历史光曲线，该时间跨度约为10年，分析了使用四种不同方法（使用Lomb-Scargle期间图，Redfit38，Jurkevich和Dacf）分析了光曲线的周期性变化。我们检测到约450天的准周期振荡（QPO）略有可能。假设它起源于进行主要合并的超质量二进制黑洞（SMBBH）系统中的螺旋运动射流，我们估计主黑洞质量M〜7.7*10^{9} m_sun。为了探索伽马射线的起源，我们使用离散相关函数（DCF）方法研究了光γ射线相关性，发现两个频段之间的相关性非常重要。这种强大的相关性倾向于暗示Lepton自同步compton（LSSC）模型产生伽马射线。
We have assembled the historical light curves of the BL Lac Object 3FGL J0449.4-4350 at optical and gamma-ray bands, the time spanning about 10 years, analyzed the periodic variability of the light curves by using four different methods (Lomb-Scargle periodogram, REDFIT38, Jurkevich and DACF). We detected a marginally possible quasi-periodic oscillation (QPO) of ~450 days. Assuming it originates from the helical motion jet in a supermassive binary black hole (SMBBH) system undergoing major merger, we estimate the primary black hole mass M~7.7*10^{9} M_sun. To explore the origin of the gamma-ray, we investigated the optical-gamma-ray correlations using discrete correlation function (DCF) method, and found that the correlation between the two bands is very significant. This strong correlation tends to imply lepton self-synchro-Compton (LSSC) model to produce the gamma-ray.
