High Velocity Outflows in Narrow Absorption Line Quasars
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 alpha_ox and Dalpha_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 Dalpha_ox suggest absorption in the UV band. The positive values of Dalpha_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.
Cite
@article{arxiv.0907.3464,
title = {High Velocity Outflows in Narrow Absorption Line Quasars},
author = {G. Chartas and J. Charlton and M. Eracleous and M. Giustini and P. Rodriguez Hidalgo and R. Ganguly and F. Hamann and T. Misawa and D. Tytler},
journal= {arXiv preprint arXiv:0907.3464},
year = {2015}
}
Comments
12 pages, 5 figures, accepted in New Astronomy Reviews