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Paper: Polarization VLBI Observations of a Complete Sample of Northern BL Lacertae Objects
Volume: 144, Radio Emission from Galactic and Extragalactic Compact Sources, IAU Colloquium 164
Page: 165
Authors: Pushkarev, A. B.; Gabuzda, D. C.
Abstract: The polarization electric vectors in the VLBI jets of BL Lacertae objects are typically aligned with the jet structure. If the jet radio emission is optically thin synchrotron emission, this implies that the magnetic field is perpendicular to the jet, usually interpreted as a signature of shocks. The distribution of polarization position angles in the VLBI core components appears to be bimodal, with the polarization angles either aligned with or perpendicular to the jet direction. In order to study the origin of this characteristic polarization structure, we have made VLBI polarization observations of all 34 sources in the K\" uhr and Schmidt sample of BL Lacertae objects.
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