Model for the high-energy emission from blazars
Model for the high-energy emission from blazars
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DOI：
10.1086/173251
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发表时间：
1993-10
期刊：
影响因子：
--
通讯作者：
C. Dermer;R. Schlickeiser
中科院分区：
文献类型：
--
作者：
C. Dermer;R. Schlickeiser
假设相对论性电子在流出的流体框架中以各向同性的角度和幂律能量分布来描述，在汤姆森和克莱因-西西那体系中推导出瞬时散射辐射谱的近似公式。假设软光子源是轴对称的。我们发现，散射辐射最强烈方向上的汤姆森极限光度增强变化为：从侧面进入的光子为Γ 6，直接从后面进入的光子为Γ 2，其中Γ为流出等离子体云的总体洛伦兹因子。在一个模型中，高能电子以幂律能量分布在点或盘光子源上方的某个高度上被瞬间注入，并计算瞬时光谱和时间平均光谱，从而处理能量损失和流动
Approximate formulae for the instantaneous scattered radiation spectra are derived in the Thomson and Klein-Nishina regimes, assuming that the relativistic electrons are described by an isotropic angular and power-law energy distribution in the outflowing fluid frame. The soft photon source is assumed to be axially symmetric. We find that the Thomson-limit luminosity enhancement in the direction that the scattered radiation is most intense varies as Γ 6 for photons entering from the side and as Γ 2 for photons entering directly from behind, where Γ is the bulk Lorentz factor of the outflowing plasma cloud. Energy loss and flow are treated in a model where energetic electrons are instantaneously injected with a power-law energy distribution at some height above a point or disk photon source, and instantaneous and time-average spectra are calculated