论文标题
无线电和射电优惠类星体的光谱特性
Spectroscopic properties of radio-loud and radio-quiet quasars
论文作者
论文摘要
调查显示了无线电大声（RL）类星体占数量总数的10％-15％，而REST是无线电广播（RQ）。但是，尚不清楚此无线电大分（RLF）在不同的参数空间之间是否保持一致。这项研究表明，H $β$宽发射线的全宽度最大速度（Z <0.75）增加了RLF的增加。为了分析原因，我们比较了RL和RQ Quasars样品的强态光度，其FWHM为H $β$宽发射线大于15000 km/s/s（高宽线或HBL），其FWHM为H $β$发射线的FWHM小于2500 km/s（低宽线或LBL）。从分布中，我们可以得出结论HBL，RQ和RL类星体分别达到峰值，RL类星体具有较高的值，而对于LBL，峰几乎是无法区分的。我们预测选择效果可能是可能的原因，但要结论任何更多分析。然后，我们将结果与Wills＆Browne（1986）进行了比较，并表明我们样本中的某些对象不遵循LOGR与FWHM图的模式，其中R是5 GHz无线电芯密度与扩展的无线电宽磁力密度的比率。
Surveys have shown radio-loud (RL) quasars constitute 10%-15% of the total quasar population and rest are radio-quiet (RQ). However, it is unknown if this radio-loud fraction (RLF) remains consistent among different parameter spaces. This study shows that RLF increases for increasing full width half maximum (FWHM) velocity of the H$β$ broad emission line (z < 0.75). To analyse the reason, we compared bolometric luminosity of RL and RQ quasars sample which have FWHM of H$β$ broad emission line greater than 15000km/s (High Broad Line or HBL) with which have FWHM of H$β$ emission line less than 2500km/s (Low Broad Line or LBL). From the distributions we can conclude for the HBL, RQ and RL quasars are peaking separately and RL quasars are having higher values whereas for the LBL the peaks are almost indistinguishable. We predicted selection effects could be the possible reason but to conclude anything more analysis is needed. Then we compared our result with Wills & Browne (1986) and have shown that some objects from our sample do not follow the pattern of the logR vs FWHM plot where R is the ratio of 5 GHz radio core flux density with the extended radio lobe flux density.
