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Title:
High velocity outflows in narrow absorption line quasars
Authors:
Chartas, G.; Charlton, J.; Eracleous, M.; Giustini, M.; Hidalgo, P. Rodriguez; Ganguly, R.; Hamann, F.; Misawa, T.; Tytler, D.
Affiliation:
AA(Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States), AB(Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States), AC(Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States), AD(Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States), AE(Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802, United States), AF(Department of Computer Science, Engineering and Physics, University of Michigan-Flint, Flint, MI 48502, United States), AG(Department of Astronomy, University of Florida, 211 Bryant Space Science Center, Gainesville, FL 32611-2055, United States), AH(Cosmic Radiation Laboratory, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan), AI(Center for Astrophysics and Space Sciences, University of California San Diego, La Jolla, CA 92093-0424, United States)
Publication:
New Astronomy Reviews, Volume 53, Issue 7-10, p. 128-132. (NewAR Homepage)
Publication Date:
07/2009
Origin:
ELSEVIER
Abstract Copyright:
Elsevier B.V.
DOI:
10.1016/j.newar.2009.07.010
Bibliographic Code:
2009NewAR..53..128C

Abstract

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 αOX and ΔαOX 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 ΔαOX suggest absorption in the UV band. The positive values of ΔαOX 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.
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