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### [1005.5389] Degree-scale anomalies in the CMB: localizing t

Posted: June 16 2010
The authors study the dip in the CMB angular power spectrum around $$\ell\sim200$$ which was noted in the first year WMAP data. They find that removing a 30 degree region around the north ecliptic pole increases the power in this multipole range. The significance varies from 96% to 99.5% depending on the data (WMAP1, WMAP3 or WMAP5) and the noise weighting scheme used.

This is to be compared to astro-ph/0404206, where Hansen et al studied 19 degree discs and found no angular dependence of the first peak position and amplitude.