MOJAVE XVI: Multi-Epoch Linear Polarization Properties of Parsec-Scale AGN Jet Cores

Understand

We present an analysis of the core linear polarization properties of 387 parsec-scale active galactic nuclei (AGN) jets.

• Using 15 GHz VLBA data, we revisit the conclusions of the first paper in this series with multi-epoch measurements and more detailed analysis of a larger AGN sample which spans a broader range of synchrotron peak frequencies.
• Each AGN has been observed for at least five epochs between 1996 and 2017.
• We find that BL Lac objects have core electric vector position angles (EVPAs) which tend towards alignment with the local jet direction; compared to flat spectrum radio quasars (FSRQs), their EVPAs are also less variable over time.