Once more on quasar periodicities

Details Once more on quasar periodicities Once more on quasar periodicities

Dec 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994ap%26ss.222...65h&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 222, no. 1-2, p. 65-83

Astronomy and Astrophysics

Astrophysics

4

Astronomical Models, Periodic Variations, Quasars, Radio Spectra, Luminosity, Red Shift

Scientific paper

In an earlier paper Arp, Bi, Chu and Zhu investigated various quasar samples and recognized a periodicity of remarkable degree in them. Their conclusion was that the existence of such a periodicity is a counterevidence against the cosmological origin of quasar redshifts. Since this question is of great importance in a cosmological context, here we reanalyze some of the samples together with a galaxy sample of the pencil-beam survey of Broadhurst et al. Our result is that on the plane of cosmological parameters (Omega 0, lambda 0) there is a non-negligible region where two quasar samples and the galaxy sample are simultaneously fairly periodic. Pure periodicity is still compatible with cosmological principles, at least on length scales much longer than the period length. So the regularities can fit into a cosmological context.

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