Gamma-ray luminosity function of gamma-ray bright AGNs
Gamma-ray luminosity function of gamma-ray bright AGNs
复制标题
伽马射线亮活动星系核的伽马射线光度函数
DOI：
10.1088/1674-4527/9/1/007
复制
发表时间：
2008
影响因子：
1.8
通讯作者：
R. Mukherjee
中科院分区：
文献类型：
--
作者：
D. Bhattacharya;P. Sreekumar;R. Mukherjee
康普顿伽马射线天文台 (CGRO) 的重要发现之一是检测一类活动星系核（即耀变体）发出的 γ 射线。然而，它们的γ射线光度函数尚未得到很好的确定。早期作品中很少进行尝试，其中 BL Lacs 和平频谱射电类星体 (FSRQ) 被视为单一源类。在本文中，我们分别研究了FSRQs和BL Lacs的演化和γ射线光度函数。我们的调查表明 BL Lacs 没有进化，但 FSRQs 显示出显着的进化。假设 FSRQ 为纯光度演化，并检查指数和幂律演化模型。由于光源数量较少，FSRQ的光度函数的低光度端指数受到上限的限制。 BL Lac 光度函数未显示任何断裂特征。作为一致性检查，从这些光度函数导出的模型源分布与观察到的源分布没有显着偏离。
Detection of γ-ray emissions from a class of active galactic nuclei (viz blazars), has been one of the important findings from the Compton Gamma-Ray Observatory (CGRO). However, their γ-ray luminosity function has not been well determined. Few attempts have been made in earlier works, where BL Lacs and Flat Spectrum Radio Quasars (FSRQs) have been considered as a single source class. In this paper, we investigated the evolution and γ-ray luminosity function of FSRQs and BL Lacs separately. Our investigation indicates no evolution for BL Lacs, however FSRQs show significant evolution. Pure luminosity evolution is assumed for FSRQs and exponential and power law evolution models are examined. Due to the small number of sources, the low luminosity end index of the luminosity function for FSRQs is constrained with an upper limit. BL Lac luminosity function shows no signature of break. As a consistency check, the model source distributions derived from these luminosity functions show no significant departure from the observed source distributions.
DOI：
10.1086/186882
发表时间：
1993-06
期刊：
The Astrophysical Journal
影响因子：
--
作者：
F. Stecker;M. Salamon;M. Malkan
通讯作者：
F. Stecker;M. Salamon;M. Malkan
耀变体的伽马射线光度函数和宇宙伽马射线背景：光度的证据-
DOI：
--
发表时间：
2006
期刊：
The Astrophysical Journal 643
影响因子：
--
作者：
Narumoto;Takuro;Totani;Tomonori
通讯作者：
Tomonori