Galaxy redshift abundance periodicity from Fourier analysis of number counts N(z) using SDSS and 2dF GRS galaxy surveys

被引：14
|
作者：
Hartnett, J. G. [1 ]
Hirano, K. [2 ]
机构：
[1] Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia
[2] Tokyo Univ Sci, Dept Phys, Shinjuku Ku, Tokyo 1628601, Japan
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2008年 / 318卷 / 1-2期
基金：
美国国家科学基金会; 澳大利亚研究理事会; 美国国家航空航天局;
关键词：
Galaxies: distances and redshifts; Large-scale structure of universe;
D O I：
10.1007/s10509-008-9906-4
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
A Fourier analysis on galaxy number counts from redshift data of both the Sloan Digital Sky Survey and the 2dF Galaxy Redshift Survey indicates that galaxies have preferred periodic redshift spacings of Delta z = 0.0102, 0.0246, and 0.0448 in the SDSS and strong agreement with the results from the 2dF GRS. The redshift spacings are confirmed by the mass density fluctuations, the power spectrum P(z) and N-pairs calculations. Application of the Hubble law results in galaxies preferentially located on co-moving concentric shells with periodic spacings. The combined results from both surveys indicate regular co-moving radial distance spacings of 31.7 +/- 1.8 h(-1) Mpc, 73.4 +/- 5.8 h(-1) Mpc and 127 +/- 21 h(-1) Mpc. The results are consistent with oscillations in the expansion rate of the universe over past epochs.
引用
收藏
页码：13 / 24
页数：12
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