论文标题
VLA天空调查中确定的高红移无线电AGN
Variable Radio AGN at High Redshift Identified in the VLA Sky Survey
论文作者
论文摘要
作为对非常大的阵列Sky Surge（Vlass）时期1（2017-2019）中的无线电瞬变的一项研究，我们发现了在光学/红外中选择的0.2 <z <z <z <z <3.2活性银河核（AGN）的样本，这些样本最近在广播中在广播中显着亮了。这些来源以前本来可以根据二十秒（首先; 1993-2011）的无线电天空图像中的上限来归类为无线电Quiet；但是，它们现在与无线电大型类星体一致。我们提出了一个具有极端无线电可变性的AGN样品样本的准杂种，多波段（1-18 GHz）VLA随访活动。我们得出的结论是，无线电属性与最近几十年来最近发射喷气机的AGN最一致，这可能使其成为最年轻的广播AGN闻名。
As part of an on-going study of radio transients in Epoch 1 (2017-2019) of the Very Large Array Sky Survey (VLASS), we have discovered a sample of 0.2<z<3.2 active galactic nuclei (AGN) selected in the optical/infrared that have recently brightened dramatically in the radio. These sources would have previously been classified as radio-quiet based on upper limits from the Faint Images of the Radio Sky at Twenty-centimeters (FIRST; 1993-2011) survey; however, they are now consistent with radio-loud quasars. We present a quasi-simultaneous, multi-band (1-18 GHz) VLA follow-up campaign of our sample of AGN with extreme radio variability. We conclude that the radio properties are most consistent with AGN that have recently launched jets within the past few decades, potentially making them among the youngest radio AGN known.
