We present statistical analyses of large homogenous data sample of Fermi-detected blazars thoroughly studied in order to reassess the relationship between flat-spectrum radio quasars (FSRQs) and subclasses of BL Lacertae objects (BL Lacs) blazar populations. We discovered from the average values of γ-ray (${\alpha }_{\gamma -ray}$) and X-ray (${\alpha }_{X-ray}$) spectral indices that the sequence of distribution is indicative of blazar unification scheme. Analyses of FSRQs and BL Lacs data show difference in the shape of γ-ray and X-ray spectral indices: significant anti-correlation (r> - 0.79) exists between ${\alpha }_{\gamma -ray}$ and ${\alpha }_{X-ray}$ spectral indices. The spectral energy distributions of the blazar subclasses show that FSRQs and BL Lacs have similar spectral properties which can be unified through evolutionary sequence. Nevertheless, there is a significant difference between the shapes of X-ray and γ-ray spectra of blazars suggestive that different mechanisms are responsible for spectral variations in the two energy bands. All these results suggest that there is a form of a unified scheme for all blazars.

我们对费米检测到的耀变体的大型同质数据样本进行了彻底研究，以重新评估平谱射电类星体 (FSRQ) 与 BL Lacertae 天体 (BL Lacs) 耀变体种群子类之间的关系。我们从γ射线的平均值中发现（${\alpha }_{\gamma -r\mathrm{一种}是}$) 和 X 射线 (${\alpha }_{X-r\mathrm{一种}是}$) 光谱指数，即分布序列表示 blazar 统一方案。FSRQs 和 BL Lacs 数据的分析表明 γ 射线和 X 射线光谱指数的形状存在差异：之间存在显着的反相关 ( r > - 0.79)${\alpha }_{\gamma -r\mathrm{一种}是}$ 和 ${\alpha }_{X-r\mathrm{一种}是}$光谱指数。耀变体亚类的光谱能量分布表明FSRQs和BL Lacs具有相似的光谱特性，可以通过进化序列统一。尽管如此，耀变体的 X 射线和 γ 射线光谱的形状之间存在显着差异，这表明不同的机制是导致两个能带光谱变化的原因。所有这些结果表明，所有耀变体都存在一种统一方案。