Key points are not available for this paper at this time.
In models with a cosmological constant a significant component of the cosmic microwave background (CMB) anisotropy is produced at rather low redshifts z1. 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.
Crittenden et al. (Mon,) studied this question.