Abstract
A coherent, sinusoidal peculiar velocity field of amplitude δυ/c ≃ 3 × 10-3 and wavelength λ ≃ 128h-1 Mpc could explain the apparent redshift periodicity seen in the recent pencil-beam survey of Broadhurst et al. Such a peculiar velocity field could arise if the power spectrum of density perturbations has a strong feature at about this wavelength (e.g., a bump). This explanation has additional predictions: the phase, period, and strength of the periodicity should vary in different directions; the strength of the periodicity should decrease at higher redshifts; and there should be more "thin" structures perpendicular to the line of sight than parallel to it.
Original language | English (US) |
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Pages (from-to) | L57-L60 |
Journal | Astrophysical Journal |
Volume | 366 |
Issue number | 2 PART 2 |
DOIs | |
State | Published - Jan 10 1991 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Astronomy and Astrophysics
- Space and Planetary Science
Keywords
- Cosmic background radiation
- Galaxies: Redshifts