标题： 耀星对星系际弥散伽马射线背景的贡献及其未来的空间分辨率 显示英文标题

标题： The Contribution of Blazars to the Extragalactic Diffuse Gamma-ray Background and Their Future Spatial Resolution

摘要： 我们研究了耀变体演化中光度相关密度演化模型的限制条件，这些条件基于弥漫伽马射线背景（DGRB）的观测谱、耀变体源计数分布以及将耀变体光谱与光度联系起来的耀变体谱能量分布序列模型。 我们表明，费米伽马射线空间望远镜上的大面积望远镜（LAT）观测到的DGRB可以完全由耀变体和非耀变体活动星系核的伽马射线发射产生，并且我们的耀变体演化模型与费米-LAT观测到的DGRB光谱和耀变体源计数分布函数一致并且受到约束。 我们的结果与之前使用EGRET能谱数据预测费米-LAT DGRB的工作一致。 该模型仅包含三个自由参数，并预测在5年的观测时间内，费米-LAT将解析出>~95%的耀变体辐射通量为点源，同时使DGRB中的通量减少约2到3倍（95%置信水平），这对费米-LAT探测暗物质湮灭光子的灵敏度具有重要意义。 显示英文摘要

摘要： We examine the constraints on the luminosity-dependent density evolution model for the evolution of blazars given the observed spectrum of the diffuse gamma-ray background (DGRB), blazar source-count distribution, and the blazar spectral energy distribution sequence model, which relates the observed the blazar spectrum to its luminosity. We show that the DGRB observed by the Large Area Telescope (LAT) aboard the Fermi Gamma Ray Space Telescope can be produced entirely by gamma-ray emission from blazars and nonblazar active galactic nuclei, and that our blazar evolution model is consistent with and constrained by the spectrum of the DGRB and flux source-count distribution function of blazars observed by Fermi-LAT. Our results are consistent with previous work that used EGRET spectral data to forecast the Fermi-LAT DGRB. The model includes only three free parameters, and forecasts that >~ 95% of the flux from blazars will be resolved into point sources by Fermi-LAT with 5 years of observation, with a corresponding reduction of the flux in the DGRB by a factor of ~2 to 3 (95% confidence level), which has implications for the Fermi-LAT's sensitivity to dark matter annihilation photons.