The peak frequencies of the two broad humps evident in the spectral energy density of blazars (SED) are time dependent and vary a lot between different blazars. However, their ratio in most blazars appears to be almost universal and equal to m _e c ²/4(1 + z)ϵ _p to a good approximation, where m _e is the electron mass, ϵ _p is the peak energy of the cosmic microwave background radiation, and z is the redshift of the blazar. We discuss a possible origin of such a universal ratio in blazars: gamma-ray bursts (GRBs). We point out a possible connection between the knee in the energy spectrum of cosmic-ray electrons and the maximal peak energies of the two broad humps in the SED of high energy peaked blazars and GRBs. We also point out that a universal peak ratio in double hump blazars that belong to different classes in the BL Lac sequence may simply reflect different viewing angles of otherwise similar blazars.

在耀变体的光谱能量密度 (SED) 中明显的两个宽峰的峰​​值频率是时间相关的，并且在不同的耀变体之间变化很大。然而，它们在最耀变比似乎是几乎普遍且等于米 _ë ç ² /4（1 + Ž）ε _p到一个良好的近似，其中，米_Ë是电子的质量，ε _p是宇宙的峰值能量微波背景辐射和z 是耀变体的红移。我们讨论了耀变体中这种普遍比率的可能起源：伽马射线暴（GRB）。我们指出宇宙射线电子能谱中的拐点与高能峰值耀变体和 GRB 的 SED 中两个宽峰的最大峰值能量之间可能存在联系。我们还指出，在 BL Lac 序列中属于不同类别的双峰耀变体的普遍峰值比率可能只是反映了其他相似耀变体的不同视角。