GLOBAL REDSHIFT PERIODICITIES - ASSOCIATION WITH THE COSMIC BACKGROUND-RADIATION

Authors
Citation
Wj. Cocke et Wg. Tifft, GLOBAL REDSHIFT PERIODICITIES - ASSOCIATION WITH THE COSMIC BACKGROUND-RADIATION, Astrophysics and space science, 239(1), 1996, pp. 35-55
Citations number
24
Categorie Soggetti
Astronomy & Astrophysics
ISSN journal
0004640X
Volume
239
Issue
1
Year of publication
1996
Pages
35 - 55
Database
ISI
SICI code
0004-640X(1996)239:1<35:GRP-AW>2.0.ZU;2-V
Abstract
We investigate periodicities in redshift samples corrected for the app arent motion of the solar system relative to the cosmic background rad iation. The samples used for the initial study of CBR-related periodic ities are composed of data on galaxies with 21 cm profiles of intermed iate width taken by Tifft and Tifft and Cocke at the 300-ft telescope at Green Bank. Referred to a coordinate system at rest with respect to the CBR, these data are found to be periodic near the 72 km s(-1) per iod previously associated with redshift quantization. Spectral power m ethods are used to evaluate the high significance levels found for the association. The significance is verified by searching for periodicit ies in a large volume of velocity space. The search shows that random occurrences at the specified period occur at a level consistent with t he fact that the coincidence with the CBR rest frame is very improbabl e. It is further shown that a phase shift occurs in the periodicity ne ar 21 cm profile widths of 250 km s(-1). Other data confirm the corres pondence with the CBR rest frame and the effects of dependence on prof ile width; namely, 21 cm data by Fisher and Tully and data by Giovanel li and Haynes for the Perseus supercluster. The Fisher-Tully data for moderate to large profile widths confirm the presence of significant p eriodicities close to 72 km s(-1) both below and above profile widths near 250 km s(-1) where the phase shift occurs. The Giovanelli and Hay nes data extend the analysis to galaxies with very wide 21 cm profiles and confirm the presence of a previously known period near one half o f 72 km s(-1) as well as the CBR association.