Cosmology from Maxima-1, Boomerang and COBE/DMR CMB Observations

Abstract

Recent results from BOOMERANG-98 and MAXIMA-1, taken together with COBE-DMR, provide consistent and high signal-to-noise measurements of the CMB power spectrum at spherical harmonic multipole bands over $2<\ell\lta800$. Analysis of the combined data yields 68% (95%) confidence limits on the total density, ${\Omega }_{\mathrm{tot}}\simeq 1.11\pm 0.07{(}_{-0.12}^{+0.13})$, the baryon density, ${\Omega }_b{h}^2\simeq 0.032_{-0.004}^{+0.005}{(}_{-0.008}^{+0.009})$, and the scalar spectral tilt, $n_s\simeq 1.01_{-0.07}^{+0.09}{(}_{-0.14}^{+0.17})$. These data are consistent with inflationary initial conditions for structure formation. Taken together with other cosmological observations, they imply the existence of both non-baryonic dark matter and dark energy in the universe.

5 Pages, 2 Figures, Changes to match published version

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