Swift X-ray obs. of 31 SMS4 QSOs & radio gal.

We present Neil Gehrels Swift Observatory (hereafter Swift) observations of 31 sources from the SMS4 catalog, a sample of 137 bright radio sources originally designed to extend...我们呈现了来自SMS4星表（SMS4 catalog）的31个源的尼尔·格雷尔斯斯威夫特天文台（Neil Gehrels Swift Observatory，以下简称斯威夫特（Swift））观测数据。该星表包含137个明亮射电源，最初旨在拓展……