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High velocity outflows in narrow absorption line quasars

机译：窄吸收线类星体中的高速流出

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摘要

The current paradigm for the AGN phenomenon is a central engine that consists of an inflow of material accreting in the form of a disk onto a supermassive black hole. Observations in the UV and optical find high velocity ionized material outflowing from the black hole. We present results from Suzaku and XMM-Newton observations of a sample of intrinsic NAL quasars with high velocity outflows. Our derived values of the intrinsic column densities of the X-ray absorbers are consistent with an outflow scenario in which NAL quasars are viewed at smaller inclination angles than BAL quasars. We find that the distributions of α_(OX) and Δα_(OX) of the NAL quasars of our sample differ significantly from those of BAL quasars and SDSS radio-quiet quasars. The NAL quasars are not significantly absorbed in the X-ray band and the positive values of Δα_(OX) suggest absorption in the UV band. The positive values of Δα_(OX) of the intrinsic NAL quasars can be explained in a geometric scenario where our lines of sight towards the compact X-ray hot coronae of NAL quasars do not traverse the absorbing wind whereas lines of sight towards their UV emitting accretion disks do intercept the outflowing absorbers.
机译：AGN现象的当前范例是中央引擎，它由以圆盘形式吸积的材料流入超大质量黑洞组成。在紫外和光学观察中发现从黑洞流出的高速电离物质。我们从Suzaku和XMM-Newton观测结果中获得了具有高速流出的固有NAL类星体的样本。我们得出的X射线吸收剂固有柱密度值与流出场景相符，在该场景中，与BAL类星体相比，在较小的倾斜角度下观察NAL类星体。我们发现我们样本的NAL类星体的α_（OX）和Δα_（OX）的分布与BAL类星体和SDSS放射性静类星体的分布明显不同。 NAL类星体在X射线谱带中没有明显吸收，并且Δα_（OX）的正值表明在UV谱带中有吸收。内部NAL类星体的Δα_（OX）的正值可以在几何场景中解释，其中我们朝向NAL类星体的紧凑X射线热日冕的视线不横过吸收风，而朝向它们的UV辐射的视线吸积盘会拦截流出的吸收器。

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  • 来源
    《New astronomy reviews》 |2009年第10期|128-132|共5页
  • 作者

    G. Chartas; J. Charlton; M. Eracleous; M. Giustini; P. Rodriguez Hidalgo; R. Ganguly; F. Hamann; T. Misawa; D. Tytler;

  • 作者单位

    Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States;

    Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States;

    Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States;

    Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States;

    Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States;

    Department of Computer Science, Engineering and Physics, University of Michigan-Flint, Flint, MI 48502, United States;

    Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055, United States;

    Cosmic Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan;

    Center for Astrophysics and Space Sciences, University of California San Diego, La Jolla, CA 92093-0424, United States;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    techniques: spectroscopic; quasars: general; galaxies: active;

    机译：技术：光谱学;类星体：一般;星系：活跃;

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