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首页> 外文期刊>The Astrophysical journal >BLACK HOLE MASSES AND DOPPLER FACTORS OF GAMMA-RAY ACTIVE GALACTIC NUCLEI
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BLACK HOLE MASSES AND DOPPLER FACTORS OF GAMMA-RAY ACTIVE GALACTIC NUCLEI

机译：伽马射线活性银河系核的黑洞质量和多普勒因子

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摘要

The sizes of the broad-line regions (BLRs) in γ-ray active galactic nuclei (AGNs) are estimated from their optical continuum luminosity by using the empirical relation between R_(BLR) and L_(λ, opt). Using broad emission line data, we derive the photon energy density in the relativistic blobs near the massive black holes in AGNs. We calculate the power of the broad-line photons Compton upscattered by the relativistic electrons in the blobs. Compared with observed γ-ray emission data, the Doppler factors δ of the blobs for a sample of 36 γ-ray AGNs are derived that are in the range of ～3-17. We estimate the central black hole masses of these γ-ray AGNs from the sizes of the BLRs and the broad-line widths. It is found that the black hole masses are in the range of ～10~8-10~(10) solar mass. A significant correlation is found between the Doppler factor δ and the core dominance parameter R. The results are consistent with the external radiation Compton models for γ-ray emission from AGNs. The soft seed photons are probably from the BLRs.
机译：通过使用R_（BLR）和L_（λ，opt）之间的经验关系，可以从γ射线活性银河原子核（AGN）的宽线区域（BLR）的大小来估计它们的光学连续性光度。使用宽发射线数据，我们得出AGN中大量黑洞附近的相对论斑点中的光子能量密度。我们计算了斑点中相对论性电子向上散射的宽线光子康普顿的功率。与观察到的γ射线发射数据相比，得出了36个γ射线AGN样本中斑点的多普勒因子δ，范围在〜3-17之间。我们从BLR的大小和粗线宽度估计这些γ射线AGN的中心黑洞质量。发现黑洞质量在太阳质量的〜10〜8-10〜（10）范围内。发现多普勒因子δ与核心优势参数R之间存在显着相关。结果与AGN的γ射线发射的外部辐射康普顿模型一致。软种子光子可能来自BLR。

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