The contribution of quasar absorption outflows to AGN feedback
The contribution of quasar absorption outflows to AGN feedback
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DOI：
10.1093/mnras/staa2981
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发表时间：
2020-09
影响因子：
4.8
通讯作者：
T. Miller;N. Arav;Xinfeng Xu;G. Kriss
中科院分区：
文献类型：
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作者：
T. Miller;N. Arav;Xinfeng Xu;G. Kriss
确定类星体吸收流出中心源（R）的距离及其动力学光度对于理解它们对活动星系核（AGN）反馈的贡献至关重要。在这里，我们总结了用哈勃太空望远镜观测到的九个发光类星体的样本结果。我们发现，在超过一半的对象的外流是强大的，足以成为活动星系核反馈的主要代理人，大多数外流被发现在R>100 pc。样本是类星体的吸收流出人口作为一个整体的代表，是无偏的R和动力学光度的特定范围。因此，分析结果可以推广到包括宽吸收线类星体在内的大多数此类天体。我们发现，这些结果是一致的另一个样本（七个类星体），也是无偏的特定范围内的R和动力学光度。假设所有的类星体都有吸收流出，我们得出结论，大多数发光类星体产生的流出，可以显着贡献活动星系核反馈。我们还讨论了外流是否有足够的能量引起活动星系核反馈效应的标准。
Determining the distance of quasar absorption outflows from the central source (R) and their kinetic luminosity are crucial for understanding their contribution to active galactic nucleus (AGN) feedback. Here we summarize the results for a sample of nine luminous quasars that were observed with the Hubble Space Telescope. We find that the outflows in more than half of the objects are powerful enough to be the main agents for AGN feedback, and that most outflows are found at R>100 pc. The sample is representative of the quasar absorption outflow population as a whole and is unbiased towards specific ranges of R and kinetic luminosity. Therefore, the analysis results can be extended to the majority of such objects, including broad absorption line quasars. We find that these results are consistent with those of another sample (seven quasars) that is also unbiased towards specific ranges of R and kinetic luminosity. Assuming that all quasars have absorption outflows, we conclude that most luminous quasars produce outflows that can contribute significantly to AGN feedback. We also discuss the criterion for whether an outflow is energetic enough to cause AGN feedback effects.