Year: 1996
Type: article
Abstract: In models with a cosmological constant a significant component of the cosmic microwave background (CMB) anisotropy is produced at rather low redshifts $z\ensuremath{\lesssim}1$. In these models, the gravitational potential perturbations begin to evolve at late times, shifting the frequencies of photons passing though them. Since the potential reflects the matter density, the latter should be correlated with the CMB anisotropy. We examine this correlation and discuss the prospects for using an x-ray/COBE comparison to detect a cosmological constant.
Source: Physical Review Letters
Authors: Robert G. Crittenden, Neil Turok
Institution: Princeton University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funder: National Science Foundation
OpenAlex ID: W1839108935