Global alignments of parsec-scale AGN radio jets and their polarization
  planes
  A number of works reported on the existence of a large scale alignment of the
polarization plane of extragalactic sources as well as the alignment of
radio-sources structural axes. However, both claims and their interpretation
remain controversial. For the first time we explore the parsec-scale jets
alignments. Additionally, we use archival polarimetric data at different
wavelengths in order to compare relative orientations of the jets and the
polarization planes of their emission. Using the flux density distribution in
very long baseline interferometry (VLBI) radio maps from the Astrogeo database,
we determine the parsec-scale jet orientation for the largest sample of active
galactic nuclei (AGN) to date. Employing the method of parallel transport and a
sample statistics characterizing the jet orientation dispersion among
neighbors, we test whether the identified jets are significantly aligned. We
show that the parsec-scale jets in our sample do not demonstrate any
significant global alignments. Moreover, the jet direction is found to be
weakly correlated with the polarization plane direction at different
frequencies.
