Spectropolarimetry of Broad H_alpha Lines and Geometry of the BLR
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In a small fraction of Broad Line Radio Galaxies (BLRG) and Seyfert 1 galaxies, the polarization position angle rotates across the broad emission lines, especially at H_alpha. An understanding of this behavior can potentially yield important information on the scattering geometry in the nucleus. We show two examples of this phenomenon, 3C 445, a BLRG, and Mrk 231, a Seyfert 1, and present an equatorial scattering model that explains some of its features in a straightforward way.
6 pages, 3 figures. To appear in Mass Outflow in Active Galactic Nuclei; New Perspectives, Eds D.M. Crenshaw, S.B. Kraemer, and I.M. George
6 pages, 3 figures. To appear in Mass Outflow in Active Galactic Nuclei; New Perspectives, Eds D.M. Crenshaw, S.B. Kraemer, and I.M. George