MohammadHossein Jamshidi, Abdolali Banihashemi, Nima Khosravi
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On the (higher multipoles) variance asymmetry in the cosmic microwave background
We have studied the cosmic microwave background (CMB) map looking for
features beyond cosmological isotropy. We began by tiling the CMB variance map
(which are produced by different smoothing scales) with stripes of different
sizes along the most prominent dipole direction. We were able to confirm
previous findings regarding the significance of the dipole. Furthermore, we
discovered that some of the higher multipoles exhibit significance comparable
to the dipole which naturally depends on the smoothing scales. At the end, we
discussed this result having an eye on look-elsewhere-effect. We believe our
results may indicate an anomalous patch in the CMB sky that warrants further
investigation.