Fig. 5
Fit of the Zhang et al. (2014, 2015) model scenario (green solid line) to the BL Lac linear polarization (host galaxy corrected, assuming unpolarized emission, e.g. Covino et al. 2003) and position angle data. The general behavior is fairly well described by the model, although for the polarization the addition of weakly constrained turbulence in the magnetic field is required.
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