Supplemental Material
Astrophysics, abstract
astro-ph/0005124
From: Shaul Hanany <hanany@physics.umn.edu> Date: Mon, 8 May 2000 22:25:27 GMT (53kb)
Constraints on Cosmological Parameters from MAXIMA-1
Authors: A. Balbi, P. Ade, J. Bock, J. Borrill, A. Boscaleri, P. de Bernardis, P. G. Ferreira, S. Hanany, V. V. Hristov, A. H. Jaffe, A. T. Lee, S. Oh, E. Pascale, B. Rabii, P. L. Richards, G. F. Smoot, R. Stompor, C. D. Winant, J. H. P. Wu
Comments: Submitted to ApJ Letters; 4 pages, 5 figures
We set new constraints on a seven-dimensional space of cosmological parameters within the class of inflationary adiabatic models. We use the angular power spectrum of the cosmic microwave background measured over a wide range of l in the first flight of the MAXIMA balloon-borne experiment (MAXIMA-1) and the low l results from COBE/DMR. We find constraints on the total energy density of the universe, \Omega=0.90 +/- 0.15, the physical density of baryons, \Omega_{b}h^2 = 0.025 +/- 0.010, the physical density of cold dark matter, \Omega_{cdm}h^2=0.13 +/- 0.10, and the spectral index of primordial scalar fluctuations, n_s=0.99 +/- 0.09, all at the 95% confidence level. By combining our results with measurements of high-redshift supernovae we constrain the value of the cosmological constant and the fractional amount of pressureless matter in the universe to 0.40 < \Omega_\Lambda < 0.76 and 0.25< \Omega_{m} < 0.50, at the 95% confidence level. Our results are consistent with a flat universe, the baryon density from big bang nucleosynthesis and the shape parameter deduced from large scale structure.
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