Tuesday, July 14, 2009

Cosmic Microwave Background Anomalies

NASA / WMAP Science Team

Large scale alignment anomalies of CMB anisotropies: a new test for residuals applied to WMAP 5yr maps
The paper lists some anomalies of the CMB with respect to the lambda cold dark matter model:
1. There is low correlation (essentially zero) at large angles, not expected.
2. Unlikely alignments of low order multipole moments: the quadrupole and octupole moments with the dipole moment (which is caused by the motion of the earth). AKA "The Axis of Evil".
3. The two hemispheres defined by the plane of the solar system are asymmetric.
4. A Cold Spot in the southern hemisphere.

No comments: