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Paper: Polarimetric Signatures of Winds from Active Galactic Nuclei
Volume: 449, Astronomical Polarimetry 2008: Science from Small to Large Telescopes
Page: 436
Authors: Young, S.; Axon, D.; Robinson, A.; Smith, J.; Hough, J. H.
Abstract: We present high signal-to-noise spectropolarimetry of the Broad Absorption Line QSO (BALQSO) PG 1700+518. Modeling of the polarization in this object, aspects of which were first reported in Young et al. (2007), confirms that in order to reproduce the variations in θ(λ) across Hα, scattering must predominantly take place in a rising hollow cylinder. The main scattering region is rising vertically off the accretion disk at a velocity close to the local Keplerian velocity and rotating about the system axis. Additionally, the scattering region is launched from a region in the accretion disk close to where the BLR originates and extends to a height significantly greater than inner launch radius.
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