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CMB statistical anisotropy, multipole vectors and the influence of the dipole

Robert C. Helling·Peter Schupp·Tiberiu Tesileanu
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Abstract

A simple algorithm which gives the multipole vectors in terms of the roots of a polynomial is given. We find that the reported alignmet of the low l multipole vectors can be summarised as an anti-alignmet of these with the dipole direction. This anti-alignment is not only present in l=2 and 3 but also for l=5 and higher. This alignment is likely due to non-linearity in the data processing. Our results are based on the three year WMAP data, we also list corresponding results for the first year data.

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Robert C. Helling, Peter Schupp, Tiberiu Tesileanu. 2006-03-30. CMB statistical anisotropy, multipole vectors and the influence of the dipole. https://doi.org/10.1103/physrevd.74.063004

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