Critical Examinations of QSO Redshift Periodicities and Associations with Galaxies in Sloan Digital Sky Survey Data

Abstract

We have used the publicly available data from the Sloan Digital Sky Survey and 2dF QSO Redshift Survey to test the hypothesis that QSOs are ejected from active galaxies with periodic non-cosmological redshifts. For two different intrinsic redshift models, namely the Karlsson $\log (1+z)$ model and Bell's decreasing intrinsic redshift (DIR) model, we do two tests respectively. First, using different criteria, we generate four sets of QSO-galaxy pairs and find there is no evidence for a periodicity at the predicted frequency in $\log (1+z)$, or at any other frequency. We then check the relationship between high redshift QSOs and nearby active galaxies, and we find the distribution of projected distance between high redshift QSOs and nearby active galaxies and the distribution of redshifts of those active galaxies are consistent with a distribution of simulated random pairs, completely different from Bell's previous conclusion. We also analyze the periodicity in redshifts of QSOs, and no periodicity is found in high completeness samples, contrary to the DIR model. These results support that QSOs are not ejected from active galaxies.

25 pages, 13 figures, accepted for publication in ApJ

References in corpus (4)

• NYU-VAGC: a galaxy catalog based on new public surveys
• The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function
• The Sloan Digital Sky Survey Quasar Catalog III. Third Data Release
• Distances of Quasars and Quasar-Like Galaxies: Further Evidence that QSOs may be Ejected from Active Galaxies

Cited by in corpus (7)

• Tests and problems of the standard model in Cosmology
• Estimating cosmological parameters from future gravitational lens surveys
• Six Peaks Visible in the Redshift Distribution of 46,400 SDSS Quasars Agree with the Preferred Redshifts Predicted by the Decreasing Intrinsic Redshift Model
• Astrophysics in 2006
• The redshift distribution of absorption-line systems in QSO spectra
• Selection Effects in the SDSS Quasar Sample: The Filter Gap Footprint
• Absence of a Periodic Component in Quasar z-Distribution