Evidence of isotropy on large distance scales from polarizations of radio sources

TY - JOUR

T1 - Evidence of isotropy on large distance scales from polarizations of radio sources

AU - Tiwari, Prabhakar

AU - Jain, Pankaj

N1 - Publisher Copyright: © 2019 ESO.

PY - 2019/2/1

Y1 - 2019/2/1

N2 - 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.

AB - 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.

KW - Galaxies: active

KW - Galaxies: high-redshift

KW - Large-scale structure of Universe

KW - Polarization

UR - http://www.scopus.com/inward/record.url?scp=85061357459&partnerID=8YFLogxK

U2 - 10.1051/0004-6361/201834192

DO - 10.1051/0004-6361/201834192

M3 - 文章

AN - SCOPUS:85061357459

SN - 0004-6361

VL - 622

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

M1 - A113

ER -