Paper:	Nuclear Obscuration in Seyfert 2 Galaxies with and without Polarized Broad Emission Lines
Volume:	373, The Central Engine of Active Galactic Nuclei
Page:	507
Authors:	Shu, X.W.; Wang, J.X.; Jang, P.; Fan, L.L.; Wang, T.-G.
Abstract:	We compiled a sample of 54 Seyfert 2 galaxies with both spectropolarimetric and X-ray observations to investigate the role of nuclear obscuration in the visibility of polarized broad emission lines (PBL). We find that at L[O III] > 1041 ergs s−1, Seyfert 2 galaxies without PBL are more obscured in X-ray (at a confidence level of 99%). Our results explain the non-detections of PBL under the framework of the unified model, and put strong constraint on the geometry of the obscuring torus and the scattering region.

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