BL Lac和FSRQ中的光谱能量分布变化
Spectral Energy Distribution variation in BL Lacs and FSRQs
摘要：
我们提出了我们的光谱能量分布（SED）的十个低到中等同步辐射峰值耀变体的样本的研究结果。我们调查的一些物理参数最有可能负责所观察到的耀变体的短期变化。要做到这一点，我们专注于研究耀变体的SED的变化对应于它们各自的光通量的变化。我们使用同步加速器模型，需要一个对数抛物线分布的电子能量从无线电到光学频率的耀变体观测光谱模型。对数抛物曲线拟合的两个光谱参数（$a$，$b$）之间存在显著的相关性，峰值频率与光谱曲率参数$b$之间存在负相关性，说明对数抛物曲线能够很好地拟合blazar的SED。在考虑每个模型参数，可能是负责在所观察到的这些耀变体的SED的变化，我们发现，在射流多普勒因子的变化是最重要的。
英文摘要：
We present the results of our study of spectral energy distributions (SEDs) of a sample of ten low- to intermediate-synchrotron-peaked blazars. We investigate some of the physical parameters most likely responsible for the observed short-term variations in blazars. To do so, we focus on the study of changes in the SEDs of blazars corresponding to changes in their respective optical fluxes. We model the observed spectra of blazars from radio to optical frequencies using a synchrotron model that entails a log-parabolic distribution of electron energies. A significant correlation among the two fitted spectral parameters ($a$, $b$) of log-parabolic curves and a negative trend among the peak frequency and spectral curvature parameter, $b$, emphasize that the SEDs of blazars are fitted well by log-parabolic curves. On considering each model parameter that could be responsible for changes in the observed SEDs of these blazars, we find that changes in the jet Doppler factors are most important.
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