Constraints on Cosmological Parameters from MAXIMA-1
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 \ell in the first flight of the MAXIMA balloon-borne experiment (MAXIMA...
| Príomhchruthaitheoirí: | , , , , , , , , , , , , , , , , , , |
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| Formáid: | Journal article |
| Foilsithe / Cruthaithe: |
2000
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| _version_ | 1826271544797560832 |
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| author | Balbi, A Ade, P Bock, J Borrill, J Boscaleri, A Bernardis, P Ferreira, P Hanany, S Hristov, V Jaffe, A Lee, A Oh, S Pascale, E Rabii, B Richards, P Smoot, G Stompor, R Winant, C Wu, J |
| author_facet | Balbi, A Ade, P Bock, J Borrill, J Boscaleri, A Bernardis, P Ferreira, P Hanany, S Hristov, V Jaffe, A Lee, A Oh, S Pascale, E Rabii, B Richards, P Smoot, G Stompor, R Winant, C Wu, J |
| author_sort | Balbi, A |
| collection | OXFORD |
| description | 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 \ell in the first flight of the MAXIMA balloon-borne experiment (MAXIMA-1) and the low \ell results from COBE/DMR. We find constraints on the total energy density of the universe, \Omega=1.0^{+0.15}_{-0.30}, the physical density of baryons, \Omega_{b}h^2=0.03 +/- 0.01, the physical density of cold dark matter, \Omega_{cdm}h^2=0.2^{+0.2}_{-0.1}$, and the spectral index of primordial scalar fluctuations, n_s=1.08+/-0.1, all at the 95% confidence level. By combining our results with measurements of high-redshift supernovae we constrain the value of the cosmological constant and the fractional amount of pressureless matter in the universe to 0.45<\Omega_\Lambda<0.75 and 0.25<\Omega_{m}<0.50, at the 95% confidence level. Our results are consistent with a flat universe and the shape parameter deduced from large scale structure, and in marginal agreement with the baryon density from big bang nucleosynthesis. |
| first_indexed | 2024-03-06T21:58:20Z |
| format | Journal article |
| id | oxford-uuid:4db948e6-69e6-40f0-b399-5fdcce987c28 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:58:20Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:4db948e6-69e6-40f0-b399-5fdcce987c282022-03-26T15:57:01ZConstraints on Cosmological Parameters from MAXIMA-1Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4db948e6-69e6-40f0-b399-5fdcce987c28Symplectic Elements at Oxford2000Balbi, AAde, PBock, JBorrill, JBoscaleri, ABernardis, PFerreira, PHanany, SHristov, VJaffe, ALee, AOh, SPascale, ERabii, BRichards, PSmoot, GStompor, RWinant, CWu, JWe set new constraints on a seven-dimensional space of cosmological parameters within the class of inflationary adiabatic models. We use the angular power spectrum of the cosmic microwave background measured over a wide range of \ell in the first flight of the MAXIMA balloon-borne experiment (MAXIMA-1) and the low \ell results from COBE/DMR. We find constraints on the total energy density of the universe, \Omega=1.0^{+0.15}_{-0.30}, the physical density of baryons, \Omega_{b}h^2=0.03 +/- 0.01, the physical density of cold dark matter, \Omega_{cdm}h^2=0.2^{+0.2}_{-0.1}$, and the spectral index of primordial scalar fluctuations, n_s=1.08+/-0.1, 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 0.45<\Omega_\Lambda<0.75 and 0.25<\Omega_{m}<0.50, at the 95% confidence level. Our results are consistent with a flat universe and the shape parameter deduced from large scale structure, and in marginal agreement with the baryon density from big bang nucleosynthesis. |
| spellingShingle | Balbi, A Ade, P Bock, J Borrill, J Boscaleri, A Bernardis, P Ferreira, P Hanany, S Hristov, V Jaffe, A Lee, A Oh, S Pascale, E Rabii, B Richards, P Smoot, G Stompor, R Winant, C Wu, J Constraints on Cosmological Parameters from MAXIMA-1 |
| title | Constraints on Cosmological Parameters from MAXIMA-1 |
| title_full | Constraints on Cosmological Parameters from MAXIMA-1 |
| title_fullStr | Constraints on Cosmological Parameters from MAXIMA-1 |
| title_full_unstemmed | Constraints on Cosmological Parameters from MAXIMA-1 |
| title_short | Constraints on Cosmological Parameters from MAXIMA-1 |
| title_sort | constraints on cosmological parameters from maxima 1 |
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