论文标题
无线电选择Blazars的硬X射线特性
Hard X-ray properties of radio-selected blazars
论文作者
论文摘要
光束AGN的硬X射线特性已在105个月的Swift/BAT目录中发表，但是迄今尚未对硬X射线频段中定义明确的，无线电阐明的低峰式式蜂巢的样本进行任何研究。 使用统计完整的Mojave-1样本，我们旨在确定无线电选择的Blazars的硬X射线特性，包括神秘的伽马射线类型。另外，我们旨在确定无线电阐明的低峰式大麻对弥漫性CXB的贡献。 我们确定了来自20 keV-100 keV的光子指数，通量和亮度，从莫哈维-1样品中的100 kev和其他摩洛哈维-1样品中的其他射流射击，源自105个月的SWIFT/BAT调查。我们计算了log n-log s分布和光度函数。 发现大多数Mojave-1 Blazars是X射线发射器的硬发射器，尽管许多射击率很低。与无线电通量密度分布相比，无线电选择的大部分的硬X射线发射的对数N-LOG S分布显然是非欧国人。在20 keV -100 keV频段中，约有0.2％的CXB可以分解为Mojave -1 Blazars。 通过光度 - 功能功能模型测试，奇特的对数N-log的分布差异可能归因于X射线和无线电带中的不同进化路径。 X射线变异性可以排除为主要贡献者。与对X射线选择的Blazar的类似研究相比，低峰的Blazars在CXB贡献方面构成了本质上不同的源群体。硬X射线通量和光谱指数可以作为单个来源的伽马射线检测概率的良好代理。例如，将深度X射线调查与EROSITA和CTA有针对性的伽马射线观测结果结合在一起的未来观察结果可以从这些高能带之间的紧密联系中受益匪浅，从而在不同的Blazar子类中受益匪浅。
Hard X-ray properties of beamed AGN have been published in the 105-month Swift/BAT catalog, but there have not been any studies carried out so far on a well-defined, radio-selected sample of low-peaked blazars in the hard X-ray band. Using the statistically complete MOJAVE-1 sample, we aim to determine the hard X-ray properties of radio-selected blazars, including the enigmatic gamma-ray-faint type. Also, we aim to determine the contribution of radio-selected low-peaked blazars to the diffuse CXB. We determined photon indices, fluxes, and luminosities in the range of 20 keV - 100 keV of blazars and other extragalactic jets from the MOJAVE-1 sample, derived from the 105-month Swift/BAT survey. We calculated log N-log S distributions and the luminosity functions. The majority of the MOJAVE-1 blazars are found to be hard X-ray emitters albeit many at low count rates. The log N-log S distribution for the hard X-ray emission of radio-selected blazars is clearly non-Euclidean, in contrast to the radio flux density distribution. Approximately 0.2% of the CXB in the 20 keV - 100 keV band can be resolved into MOJAVE-1 blazars. The peculiar log N-log S distribution disparity might be attributed to different evolutionary paths in the X-ray and radio bands, as tested by luminosity-function modeling. X-ray variability can be ruled out as the dominant contributor. Low-peaked blazars constitute an intrinsically different source population in terms of CXB contribution compared to similar studies of X-ray-selected blazars. The hard X-ray flux and spectral index can serve as a good proxy for the gamma-ray detection probability of individual sources. Future observations combining deep X-ray survey, for example, with eROSITA, and targeted gamma-ray observations with CTA can benefit strongly from the tight connection between these high-energy bands for the different blazar sub-classes.
