The cosmological principle (CP)—the notion that the Universe is spatially isotropic and
homogeneous on large scales—underlies a century of progress in cosmology. It is …

Aims. Previous studies reported an alignment of the major axes of radio galaxies on various
angular scales. Here, we study the alignment of radio galaxies in the ELAIS-N1 Low …

Correlated orientations of quasar optical and radio polarization, and of radio jets, have been
reported on Gpc scales, possibly arising from intrinsic alignment of spin axes. Optical quasar …

The direction of parsec-scale jets in active galactic nuclei (AGNs) is essential information for
many astrophysical and astrometric studies, including linear polarization and magnetic field …

We study the alignment of radio galaxy axes using the FIRST catalogue. We impose several
cuts in order to select the candidates that are most likely to be free of systematic bias. In our …

We analyse the variability of the parsec-scale jet directions in active galactic nuclei (AGNs).
Our analysis involves 317 AGNs at frequencies ranging from 2 to 43 GHz, and is made …

Context. Numerous studies have reported significant displacements in the coordinates of
active galactic nuclei (AGNs) between measurements using the very-long-baseline …

Context. Coherence in the characteristics of neighboring sources in the 2D and 3D space
may suggest the existence of large-scale cosmic structures that are useful for cosmological …

We analyze the variability of the parsec-scale jet directions in active galactic nuclei (AGNs).
Our analysis involves 317 AGNs at frequencies ranging from 2 to 43 GHz, and is made …

The observed large-scale alignment of polarization angles and galaxy axis have been
challenging the fundamental assumption of homogeneity and isotropy in standard …