论文标题
PKS B1322-110的光学研究，内部可变无线电源
Optical study of PKS B1322-110, the intra-hour variable radio source
论文作者
论文摘要
对澳大利亚望远镜紧凑阵列的观察结果显示，无线电源PKS B1322-110的内部时间变化（Bignall等人，2019年）。作为光学随访的一部分，我们获得了PKS B1322-110场的Gemini Halpha和Halpha Continuum（Halphac）图像。 Halpha-Halphac图像中PKS B1322-110的强大19-含量检测促使我们获得了PKS B1322-110的第一个光谱。使用双子座光谱，我们确定PKS B1322-110是Z = 3.007 +/- 0.002的红移，是平面射频的基准。在HALPHA滤波器中检测到的明显通量可能源自HEII发射，精确地在银河系窄带滤波器上精确地换档。我们对银河等离子体的发射度量设置了上限，以实现各种可能的云几何形状。
Observations with the Australia Telescope Compact Array revealed intra-hour variations in the radio source PKS B1322-110 (Bignall et al. 2019). As part of an optical follow-up, we obtained Gemini Halpha and Halpha continuum (HalphaC) images of the PKS B1322-110 field. A robust 19-sigma detection of PKS B1322-110 in the Halpha-HalphaC image prompted us to obtain the first optical spectrum of PKS B1322-110. With the Gemini spectrum we determine that PKS B1322-110 is a flat-spectrum radio quasar at a redshift of z=3.007 +/- 0.002. The apparent flux detected in the Halpha filter is likely to originate from HeII emission redshifted precisely on the Galactic Halpha narrow-band filter. We set upper limits on the emission measure of the Galactic plasma, for various possible cloud geometries.
