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Advances in Astronomy
Volume 2010 (2010), Article ID 847541, 17 pages
http://dx.doi.org/10.1155/2010/847541
Review Article

Large-Angle Anomalies in the CMB

1CERCA, Department of Physics, Case Western Reserve University, Cleveland, OH 44106-7079, USA
2Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109-1040, USA
3Fakultät für Physik, Universität Bielefeld, Postfach 100131, 33501 Bielefeld, Germany
4CERCA/ISO, Department of Physics, Case Western Reserve University, Cleveland, OH 44106-7079, USA

Received 30 April 2010; Revised 7 August 2010; Accepted 19 August 2010

Academic Editor: Eiichiro Komatsu

Copyright © 2010 Craig J. Copi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We review the recently found large-scale anomalies in the maps of temperature anisotropies in the cosmic microwave background. These include alignments of the largest modes of CMB anisotropy with each other and with geometry and direction of motion of the solar ssystem, and the unusually low power at these largest scales. We discuss these findings in relation to expectation from standard inflationary cosmology, their statistical significance, the tools to study them, and the various attempts to explain them.