2018/09/30 by Prabhakar Tiwari, Pankaj Jain
Physics and Astronomy · #Circular polarization #Electrical and Electromagnetic Research #Galaxies: Formation, Evolution, Phenomena #Isotropy #Linear polarization #Polarimetry #Polarization (electrochemistry) #Radio Astronomy Observations and Technology #Radio frequency #astro-ph.CO
paper · pdf · doi:10.1051/0004-6361/201834192
published as A&A 622, A113 (2019) · 6 pages, 9 figures, accepted for publication in Astronomy & Astrophysics (10/12/2018)
arxiv created 2018/12/13 · openalex publication_date 2018/12/21 · arxiv updated 2019/02/06 · openalex created_date 2019/02/21 · openalex updated_date 2026/08/05
We test the isotropy of radio polarization angle orientations with a robust and reliable dual-frequency polarimetric survey of active galactic nuclei (AGNs). We find that the polarization orientations are consistent with the assumption of isotropy for scales larger than or equal to ∼800 Mpc. This provides further evidence for isotropy at large distance scales and is likely to impose strong constraints on some of the physical mechanisms that may be invoked to explain past observations of alignment of radio and optical polarizations at large distance scales.