First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: The Angular Power Spectrum
نویسندگان
چکیده
منابع مشابه
Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Angular Power Spectra
We present the temperature and polarization angular power spectra of the cosmic microwave background (CMB) derived from the first 5 years of WMAP data. The 5year 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 ΛCDM model has a reduced χ2 for l = 33 − 1000 of χ2/ν = 1.06, with a probabil...
متن کاملFirst Year Wilkinson Microwave Anisotropy Probe ( WMAP 1 ) Observations : Interpretation of the TT and TE Angular Power Spectrum Peaks
The CMB has distinct peaks in both its temperature angular power spectrum (TT) and temperature-polarization cross-power spectrum (TE). From the WMAP data we find the first peak in the temperature spectrum at ℓ = 220.1 ± 0.8 with an amplitude of 74.7 ± 0.5 µK; the first trough at ℓ = 411.7 ± 3.5 with an amplitude of 41.0 ± 0.5 µK; and the second peak at ℓ = 546 ± 10 with an amplitude of 48.8 ± 0...
متن کاملFirst Year Wilkinson Microwave Anisotropy Probe (wmap) Observations: Interpretation of the Tt and Te Angular Power Spectrum Peaks
The CMB has distinct peaks in both its temperature angular power spectrum (TT) and temperature-polarization cross-power spectrum (TE). From the WMAP data we find the first peak in the temperature spectrum at = 220 1 0 8 with an amplitude of 74 7 0 5 K; the first trough at = 411 7 3 5 with an amplitude of 41 0 0 5 K; and the second peak at = 546 10 with an amplitude of 48 8 0 9 K. The TE spectru...
متن کاملWilkinson Microwave Anisotropy Probe (wmap) First Year Observations: Te Polarization
The Wilkinson Microwave Anisotropy Probe (WMAP) has mapped the full sky in Stokes I, Q, and U parameters at frequencies 23, 33, 41, 61, and 94 GHz. We detect correlations between the temperature and polarization maps significant at more than 10 standard deviations. The correlations are inconsistent with instrument noise and are significantly larger than the upper limits established for potentia...
متن کاملThree-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Temperature Analysis
WMAP is the result of a partnership between Princeton University and NASA’s Goddard Space Flight Center. Scientific guidance is provided by the WMAP Science Team. Code 665, NASA/Goddard Space Flight Center, Greenbelt, MD 20771 Canadian Institute for Theoretical Astrophysics, 60 St. George St, University of Toronto, Toronto, ON Canada M5S 3H8 Dept. of Physics & Astronomy, The Johns Hopkins Unive...
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ژورنال
عنوان ژورنال: The Astrophysical Journal Supplement Series
سال: 2003
ISSN: 0067-0049,1538-4365
DOI: 10.1086/377225