Absence of a Periodic Component in Quasar z-Distribution

TL;DR

This study rigorously tests the claim of a periodic component in quasar redshift distribution using large datasets, finding no evidence for such periodicity and thus challenging previous assertions that could imply fundamental cosmological implications.

Contribution

The paper provides a high-precision analysis of quasar redshift data, conclusively demonstrating the absence of a claimed periodic component, which questions earlier claims of periodicity in quasar distributions.

Findings

No periodic component detected in quasar redshift distribution

High confidence level in the absence of periodicity

Challenges previous claims of periodicity in quasar data

Abstract

Since the discovery of quasars in papers often appeared and appear the assertions that the redshift quasar distribution includes a periodic component with the period $\Delta z = 0.063$ or 0.11. A statement of such kind, if it is correct, may manifest the existence of a far order in quasar distribution in cosmological time, that might lead to a fundamental revision all the cosmological paradigm. In the present time there is a unique opportunity to check this statement with a high precision, using the rich statictics of 2dF and SDSS catalogues (about 85000 quasars). Our analysis indicates that the periodic component in distribution of quasar redshifts is absent at high confidence level.