Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra

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dc.creatorNolta, M. R.
dc.creatorDunkley, J.
dc.creatorHill, R. S.
dc.creatorHinshaw, G.
dc.creatorKomatsu, E.
dc.creatorLarson, D.
dc.creatorPage, L.
dc.creatorSpergel, D. N.
dc.creatorBennett, C. L.
dc.creatorGold, B.
dc.creatorJarosik, N.
dc.creatorOdegard, N.
dc.creatorWeiland, J. L.
dc.creatorWollack, E.
dc.creatorHalpern, M.
dc.creatorKogut, A.
dc.creatorLimon, M.
dc.creatorMeyer, S. S.
dc.creatorTucker, G. S.
dc.creatorWright, E. L.
dc.date2008-03-05
dc.date2008-10-17
dc.date.accessioned2026-07-07T12:42:29Z
dc.date.available2026-07-07T12:42:29Z
dc.descriptionWe present the temperature and polarization angular power spectra of the cosmic microwave background (CMB) derived from the first 5 years of WMAP data. The 5-year temperature (TT) spectrum is cosmic variance limited up to multipole l=530, and individual l-modes have S/N>1 for l<920. The best fitting six-parameter LambdaCDM model has a reduced chi^2 for l=33-1000 of chi^2/nu=1.06, with a probability to exceed of 9.3%. There is now significantly improved data near the third peak which leads to improved cosmological constraints. The temperature-polarization correlation (TE) is seen with high significance. After accounting for foreground emission, the low-l reionization feature in the EE power spectrum is preferred by Δχ^2=19.6 for optical depth tau=0.089 by the EE data alone, and is now largely cosmic variance limited for l=2-6. There is no evidence for cosmic signal in the BB, TB, or EB spectra after accounting for foreground emission. We find that, when averaged over l=2-6, l(l+1)C^{BB}_l/2π< 0.15 uK^2 (95% CL).
dc.description29 pages, 13 figures, accepted by ApJS
dc.identifierhttps://arxiv.org/abs/0803.0593
dc.identifierhttp://arxiv.org/abs/0803.0593
dc.identifierAstrophys.J.Suppl.180:296-305,2009
dc.identifierdoi:10.1088/0067-0049/180/2/296
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220091
dc.subjectAstrophysics
dc.titleFive-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
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