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Paper: Cosmic Microwave Background Challenges to the Standard Model
Volume: 379, Cosmic Frontiers
Page: 16
Authors: Hansen, F.K.; Eriksen, H.K.; Banday, A.J.; Gorski, K.M.; Lilje, P.B.
Abstract: Shortly after the release of the first year data from the WMAP satellite, several statistical anomalies of the Cosmic Microwave Background (CMB) fluctuation field were reported. Large scale power (scales down to about 5 degrees) was found to by asymmetrically distributed between the northern and southern ecliptic hemispheres. Unexpected alignments were found between the directions of the smallest multipoles and a huge cold spot in the southern galactic hemisphere was found to introduce non-Gaussianities. These as well as other anomalies, if found to be cosmological, may pose a threat to the cosmological standard model. Here they will be reviewed along with suggested explanations and the present status after the release of the WMAP 3 year data.
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