论文标题
将无线电发射连接到AGN风能与广泛的吸收线类星体
Connecting radio emission to AGN wind properties with Broad Absorption Line Quasars
论文作者
论文摘要
广泛的吸收线类星体（Balqsos）显示出强大的流出的强烈签名，并有可能改变其宿主星系的宇宙历史。这些特征仅在〜10％的光学选择的类星体中可见，尽管该分数显着增加了IR和无线电选定的样品。对这一观察到的部分的可靠物理解释尚未找到，同时确定了为什么在无线电波长下增加了这一部分。我们使用Lofar两米的Sky Survey Data Release 2介绍了最大的无线电匹配的Balqsos样本，并利用它来研究Balqsos的无线电性能。在DR2足迹中，Sloan Digital Sky Survey DR12有3537个Balqsos，其连续信号为噪声> 5。我们找到了1108 Balqsos的无线电检测，具有120个Lobals的重要子群，鉴于迄今为止的Lots Sky覆盖范围，无线电匹配的Balqsos的前所未有的样本量。 Balqsos是一个无线电Quiet人群，与非BALQSO相比，$ \ times $ \ times $ \ times 1.50 $。 Lobals显示出$ \ times 2.22 $的$ \ times nontbalqso类星体的增加。我们表明，该检测部分与Balqsos的风强度，红色和C_ {IV}发射属性相关，并且这些特征可以连接，尽管没有任何单个属性可以完全解释增强的无线电检测分数。我们基于风强度和颜色为BALQSOS的子类创建复合谱，发现无线电检测和无线电未挖掘来源的吸收曲线的差异，特别是对于Lobals。总体而言，我们赞成BALQSO的无线电检测部分的风向相互作用解释。
Broad Absorption Line Quasars (BALQSOs) show strong signatures of powerful outflows, with the potential to alter the cosmic history of their host galaxies. These signatures are only seen in ~10% of optically selected quasars, although the fraction significantly increases in IR and radio selected samples. A proven physical explanation for this observed fraction has yet to be found, along with a determination of why this fraction increases at radio wavelengths. We present the largest sample of radio matched BALQSOs using the LOFAR Two-metre Sky Survey Data Release 2 and employ it to investigate radio properties of BALQSOs. Within the DR2 footprint, there are 3537 BALQSOs from Sloan Digital Sky Survey DR12 with continuum signal to noise >5. We find radio-detections for 1108 BALQSOs, with an important sub-population of 120 LoBALs, an unprecedented sample size for radio matched BALQSOs given the LoTSS sky coverage to date. BALQSOs are a radio-quiet population that show an increase of $\times 1.50$ radio-detection fraction compared to non-BALQSOs. LoBALs show an increase of $\times 2.22$ that of non-BALQSO quasars. We show that this detection fraction correlates with wind-strength, reddening and C_{IV} emission properties of BALQSOs and that these features may be connected, although no single property can fully explain the enhanced radio detection fraction. We create composite spectra for sub-classes of BALQSOs based on wind strength and colour, finding differences in the absorption profiles of radio-detected and radio-undetected sources, particularly for LoBALs. Overall, we favour a wind-ISM interaction explanation for the increased radio-detection fraction of BALQSOs.
