论文标题
高还原密度测量的高速度Blazar PSO J047.4478+27.2992 at 4.7和8.2 GHz，带有RATAN-600
Flux-density measurements of the high-redshift blazar PSO J047.4478+27.2992 at 4.7 and 8.2 GHz with RATAN-600
论文作者
论文摘要
我们报告了源PSO J047.4478+27.2992的RATAN-600射电望远镜的第一个检测为4.7和8.2 GHz，该望远镜在Z = 6.1时宣布为Blazar。平均通量密度分别为$ 12 \ pm3 $和$ 8 \ pm4 $ mjy，分别为4.7和8.2 GHz，上限估计为11.2 GHz的3 mjy。在四个月的时间尺度上获得的4.7 GHz的光曲线表现出源的中等变化（分数可变性$ f_ {var} = 0.28 \ pm0.02 $）。新的Ratan-600测量值将以前的文献数据扩展到更高的频率，表明单个幂律无线电频谱，$α_{0.147-8.2} $ = $ -0.51 \ pm0.1 $。 4.7 GHz $p_ν\ SIM 2 \ times 10^{27} $ W Hz $^{ - 1} $的单色无线电光度与高还原shift quasars的值一致。
We report the first detection at 4.7 and 8.2 GHz with the RATAN-600 radio telescope of the source PSO J047.4478+27.2992, which has been announced as a blazar at z=6.1. The average flux density is $12\pm3$ and $8\pm4$ mJy at 4.7 and 8.2 GHz respectively, and an upper limit is estimated as 3 mJy at 11.2 GHz. The light curve at 4.7 GHz, obtained on a time-scale of four months, exhibits moderate variability of the source (fractional variability $F_{var}=0.28\pm0.02$). The new RATAN-600 measurements extend previous literature data to higher frequencies, indicating a single power-law radio spectrum with $α_{0.147-8.2}$=$-0.51\pm0.1$. The monochromatic radio luminosity at 4.7 GHz $P_ν \sim 2 \times 10^{27}$ W Hz$^{-1}$ is consistent with values for high-redshift quasars at $z\geq 3$.
