论文标题
基于{\ it swift}/蝙蝠105个月目录及其对宇宙MEV MEV MEV伽马射线背景辐射的贡献，基于{\ it swift}/蝙蝠的宇宙学演化
Cosmological Evolution of Flat-Spectrum Radio Quasars based on the {\it Swift}/BAT 105-month Catalog and Their Contribution to the Cosmic MeV Gamma-ray Background Radiation
论文作者
论文摘要
我们提出了使用最新的{\ it swift}/bat 105个月的X射线源目录的新型X射线光度函数（FSRQ）。与以前对X射线频带中FSRQ的研究相反，使用依赖光度的密度演化模型，我们发现FSRQ根据亮度而在$ z \ sim1-2 $处显示出进化峰。我们的结果与无线电和GEV频段中的FSRQ的演变一致，尽管数量密度较小5--10。我们进一步探讨了FSRQ对宇宙MEV伽马射线背景辐射的贡献。我们发现，FSRQ只能解释$ \ sim3 $ \％在1 MEV左右观察到的MEV伽马射线背景通量中的fsrqs，这表明需要其他人群。未来的MEV伽马射线观察将是了解MEV伽马射线背景辐射的起源的关键。
We present a new X-ray luminosity function of flat-spectrum radio quasars (FSRQs) utilizing the latest {\it Swift}/BAT 105-month X-ray source catalog. Contrary to previous studies of FSRQs in the X-ray band, using the luminosity-dependent density evolution model, we find that FSRQs show evolutionary peaks at $z\sim1-2$ depending on luminosities. Our result is rather consistent with the evolution of FSRQs seen in the radio and GeV bands, although the number density is a factor of 5--10 smaller. We further explore the contribution of FSRQs to the cosmic MeV gamma-ray background radiation. We find that FSRQs can explain only $\sim3$\% of the observed MeV gamma-ray background fluxes around 1 MeV, indicating other populations are required. Future MeV gamma-ray observations will be keys for understanding the origin of the MeV gamma-ray background radiation.
