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arXiv 2106.14907astro-ph.GA
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在高z类星体中探测到多相强外流

Multiphase Powerful Outflows Detected in High-z Quasars

George Chartas, Massimo Cappi, Cristian Vignali, Mauro Dadina, Vincent James, Giorgio Lanzuisi, Margherita Giustini, Massimo Gaspari, Sarah Strickland, Elena Bertola

摘要:

我们目前的结果从一个全面的研究中检测到的超快外流(UFO)的样本中的14个类星体,其中12个引力透镜,在红移范围为1.41-3.91,附近的活动星系核和恒星形成活动的峰值。新的XMM-牛顿观测,其中六个被选中的透镜,并包含一个窄吸收线(NAL)在其紫外光谱。另一个透镜类星体被添加到样本中,尽管已经被研究过了,因为它没有被搜索过不明飞行物。我们样本中剩下的七个类星体已知含有不明飞行物。我们研究的主要目的是推断高z类星体的外流性质,限制它们的外流诱导反馈,研究外流性质与电离源性质之间的关系,并将这些结果与附近活动星系核的结果进行比较。我们的研究增加了6个z > 1.4的UFO新检测(> 99%置信度),几乎是目前病例数量的两倍。基于我们对六个类星体的调查,我们选择了一个NAL,并用XMM-牛顿进行了观测,发现在这些类星体中,83%以上的类星体中存在着明显的内禀UV NAL和UFO的共存,这表明多相AGN反馈特性之间存在着联系。我们的高z样本的不明飞行物的运动学光度与它们的热光度相比是大的(L_K/L_Bol的中值~ 50%)。这表明它们提供了有效的反馈来影响其宿主星系的演化,磁驱动可能是其加速的重要贡献者。

英文摘要:

We present results from a comprehensive study of ultrafast outflows (UFOs) detected in a sample of fourteen quasars, twelve of which are gravitationally lensed, in a redshift range of 1.41-3.91, near the peak of the AGN and star formation activity. New XMM-Newton observations are presented for six of them which were selected to be lensed and contain a narrow absorption line (NAL) in their UV spectra. Another lensed quasar was added to the sample, albeit already studied, because it was not searched for UFOs. The remaining seven quasars of our sample are known to contain UFOs. The main goals of our study are to infer the outflow properties of high-z quasars, constrain their outflow induced feedback, study the relationship between the outflow properties and the properties of the ionizing source, and compare these results to those of nearby AGN. Our study adds six new detections ( > 99% confidence) of UFOs at z > 1.4, almost doubling the current number of cases. Based on our survey of six quasars selected to contain a NAL and observed with XMM-Newton, the coexistence of intrinsic UV NALs and UFOs is found to be significant in > 83% of these quasars suggesting a link between multiphase AGN feedback properties of the meso- and micro-scale. The kinematic luminosities of the UFOs of our high-z sample are large compared to their bolometric luminosities (median of L_K/L_Bol ~ 50%). This suggests they provide efficient feedback to influence the evolution of their host galaxies and that magnetic driving may be a significant contributor to their acceleration.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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