论文标题
南部窄线塞弗特1个星系的无线电形态，具有非常大的阵列观测
Radio morphology of southern narrow-line Seyfert 1 galaxies with Very Large Array observations
论文作者
论文摘要
我们介绍了使用Karl G. Jansky进行的新无线电观察结果，非常大的阵列C-Configuration在5.5 GHz的情况下，用于南部窄线Seyfert 1 Galaxies（NLS1S）的样本。这项工作增加了南半球已知的无线电检测NLS1的数量，并确认NLS1S的无线电发射主要集中在KPC尺度的中部地区，并且只有少数几个来源显示弥漫性发射。在无线电定价NLS1中，陡峭的光谱源中的无线电发光量往往更高，而在平面光谱源中则较低，这与Radio-Loud NLS1相反。这可能是因为陡峭的NLS1S的无线电发射由未对准的喷气机，AGN驱动的外流或紧凑型芯上的恒星形成超级叠加。取而代之的是，扁平NLS1的无线电发射可能是由尚未开发无线电飞机和流出的中心核心产生的。我们发现了带有KPC规模无线电飞机的新NLS1，并确认强大的喷气机不需要生成大质量黑洞。我们还发现以恒星形成为主的来源。这些NLS1可能是研究不同机制的无线电发射的新候选者。
We present the results of new radio observations carried out with the Karl G. Jansky Very Large Array C-configuration at 5.5 GHz for a sample of southern narrow-line Seyfert 1 galaxies (NLS1s). This work increases the number of known radio-detected NLS1s in the southern hemisphere, and confirms that the radio emission of NLS1s is mainly concentrated in a central region at kpc-scale and only a few sources show diffuse emission. In radio-quiet NLS1s, the radio luminosity tends to be higher in steep-spectrum sources and be lower in flat-spectrum sources, which is opposite to radio-loud NLS1s. This may be because the radio emission of steep NLS1s is dominated by misaligned jets, AGN-driven outflows, or star formation superposing on a compact core. Instead the radio emission of flat NLS1s may be produced by a central core which has not yet developed radio jets and outflows. We discover new NLS1s harboring kpc-scale radio jets and confirm that a powerful jet does not require a large-mass black hole to be generated. We also find sources dominated by star formation. These NLS1s could be new candidates in investigating the radio emission of different mechanisms.
