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Comparison of low-harmonics spectra and maps according to the WMAP and Planck space missions

Verkhodanov, O. V.

We present a comparison of the angular power spectra and maps represented by the WMAP and Planck mission teams. The spectra are compared in the the multi pole range (2 ≤ ℓ ≤ 50). The ℓ =5, 7, 13, 29, 37, 41–46 harmonics have a discrepancy in the angular power spectra. The maps of the microwave background and their phase characteristics are studied…

Two-dimensional spectral estimators of statistical anisotropy and search for the isolated directions in Planck mission data

Verkhodanov, O. V.; Naiden, Ya. V.

We describe a method for the analysis of homogeneity of the microwave background maps based on the behavior of the angular power spectrum C(ℓ) and parity parameter P. The estimator is built using the dispersion variation of the power spectrum of the background signal hemisphere and allows to visualize the statistical anisotropy as a new map which …