Anisotropy of the space orientation of radio sources. I: The catalog

TL;DR

This paper presents a catalog of over 10,000 extragalactic radio sources and demonstrates that their spatial orientations are statistically anisotropic, indicating a non-random distribution of their axes.

Contribution

The study compiles a large catalog of radio sources and provides evidence of anisotropic spatial orientation at low redshifts, a novel statistical analysis in this context.

Findings

Distribution of radio source axes is anisotropic with high statistical significance.

Over 1800 sources are identified with known galaxies and quasars.

The anisotropy is significant at redshifts Z ≤ 0.5.

Abstract

A catalog of the extended extragalactic radio sources consisting of 10461 objects is compiled based on the list of radio sources of the FIRST survey. A total of 1801 objects are identified with galaxies and quasars of the SDSS survey and the Veron-Veron catalog. The distribution of the position angles of the axes of radio sources from the catalog is determined, and the probability that this distribution is equiprobable is shown to be less then 10^(-7). This result implies that at Z equal to or smaller then 0.5, spatial orientation of the axes of radio sources is anisotropic at a statistically significant level.