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Spectropolarimetric Evidence for a Kicked Supermassive Black Hole in the Quasar E1821+643

  • Authors: Andrew Robinson, Stuart Young, David J. Axon, Preeti Kharb, and James E. Smith

ROBINSON et al. 2010 The Astrophysical Journal Letters 717 L122.

  • Provider: AAS Journals

Caption: Figure 4.

Comparison of simulated and observed polarization spectra for the Hα region. The panels are the same as in Figure 1, with the exception that the total and polarized flux densities are given in arbitrary units (a.u.), while the degree of polarization is normalized to 1%. Models for viewing angles ranging from α = 170° (solid heavy line) to α = 110 (dashed line) are consistent with the data. The large change in polarization position angle coincident with the weakly polarized red wing of the Hα profile can be explained by including a second source of polarization. The effect of including a compact equatorial scattering region is shown for the α = 170° model (dot-dashed line).

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