Matched SDSS and FIRST Sample

The question as to whether the distribution of radio loudness in active galactic nuclei (AGNs) is actually bimodal has been discussed extensively in the literature. Furthermore,...关于活动星系核（active galactic nuclei）的射电响度分布是否确实呈双峰分布这一问题，学界已在大量文献中展开过广泛讨论。此外，……