I use the most recent cosmic microwave background (CMB) anisotropy measurements to constrain the leading cold dark matter models in the Ωm-ΩΛ plane. A narrow triangular region is preferred. This triangle is elongated in such a way that its intersection with even conservative versions of recent supernovae, cluster mass-to-light ratios, and double radio source constraints is small and provides the current best limits in the Ωm-ΩΛ plane: ΩΛ=0.62+/-0.16 and Ωm=0.24+/-0.10. This complementarity between the CMB and other observations rules out ΩΛ=0 models at more than the 99% confidence level.
The Astrophysical Journal
- Pub Date:
- October 1998
- Cosmology: Cosmic Microwave Background;
- Cosmology: Observations;
- This version conforms to the version accepted by the Astrophysical Journal Letters. Minor revisions include references, typos and phrasing. 13 pages including 3 Figures