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Bayesian Power Spectrum Analysis of the First‐Year Wilkinson Microwave Anisotropy Probe Data

  • Authors: I. J. O'Dwyer, H. K. Eriksen, B. D. Wandelt, J. B. Jewell, D. L. Larson, K. M. Górski, A. J. Banday, S. Levin, and P. B. Lilje

O'Dwyer et al. 2004 The Astrophysical Journal Letters 617 L99.

  • Provider: AAS Journals

Caption: Fig. 3.

Probability distributions of the ﹩C_{\ell }﹩ samples for a selected set of ﹩\ell ﹩ giving the probability of obtaining a value of ﹩C_{\ell }﹩ within a given histogram bin. We plot results for the significantly non‐Gaussian low‐﹩\ell ﹩ multipoles and for selected higher values based on their deviation from the best‐fit ΛCDM model. There are 50 bins in each histogram. Red, green, and blue histograms are the Q, V, and W bands, respectively. Black is the combined QVW analysis. The dotted vertical line is the WMAP best estimate of the ﹩C_{\ell }﹩ value. The solid line is the WMAP best‐fit theory ﹩C_{\ell }﹩’s, and the dash‐dotted line is the average of the samples from our algorithms. For ﹩\ell < 7﹩, the dashed lines show the WMAP‐ILC values from Efstathiou (2004) for comparison. Further plots are available at http://www.astro.uiuc.edu/~iodwyer/research#wmap.

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