论文标题
伽玛射线响度与射电星系的X射线光谱之间的关系
Relationship between Gamma-ray loudness and X-ray spectra of Radio Galaxies
论文作者
论文摘要
{\ it fermi}卫星已检测到$ \ sim $ 60射电星系（RGS）。在这项研究中，我们研究了GEV-LOUD RGS和GEV-Quiet RGS之间X射线光谱的性质差异。我们的样本包括68个对象：用{\ it fermi}检测到的36个RG和未检测到伽马射线的32个RG。我们使用{\ it xmm-newton}，{\ it chandra}，{\ it nustar}和{\ it swift}卫星的数据分析了这68个对象的X射线光谱。我们的结果表明，大多数GEV大声的RGS并未表现出明显的吸收，而$ \ sim $ 50 \％的Gev-Quiet RGS显示出明显的吸收。这表明Gev-Loud RGS的射流是从小角度观察的，因此发射不容易被圆环阻塞。此外，我们报告说，具有重吸收的RGS主要在X射线光度范围内为$ 10^{43} -10^{45} $ ERG S $^{ - 1} $;但是，很少有亮度较低和较高的RG受到大量吸收。这与Seyfert星系的趋势相同。
The {\it Fermi} satellite has detected $\sim$60 radio galaxies (RGs). In this study, we investigate the difference in the properties of X-ray spectra between GeV-loud RGs and GeV-quiet RGs. Our sample comprises 68 objects: 36 RGs detected with {\it Fermi} and 32 RGs not detected with gamma rays. We analyzed the X-ray spectra of these 68 objects using data from the {\it XMM-Newton}, {\it Chandra}, {\it NuSTAR}, and {\it Swift} satellites. Our results show that most GeV-loud RGs do not exhibit significant absorption, while $\sim$50\% of the GeV-quiet RGs exhibit significant absorption. This suggests that the jet of GeV-loud RGs is viewed from a small angle, and thus the emission is not easily blocked by the torus. Moreover, we reported that RGs with a heavy absorption are mostly in the X-ray luminosity range of $10^{43}-10^{45}$erg s$^{-1}$; however, few RGs with lower and higher luminosity suffer from heavy absorption. This is the same trend as that of Seyfert galaxies.
