Schwarz, DominikUniBi ; Copi, Craig J. ; Huterer, Dragan ; Starkman, Glenn D.
Several unexpected features have been observed in the microwave sky at large angular scales, both by WMAP and by Planck. Among those features is a lack of both variance and correlation on the largest angular scales, alignment of the lowest multipole moments with one another and with the motion and geometry of the solar system, a hemispherical power asymmetry or dipolar power modulation, a preference for odd parity modes and an unexpectedly large cold spot in the Southern hemisphere. The individual p-values of the significance of these features are in the per mille to per cent level, when compared to the expectations of the best-fit inflationary ACDM model. Some pairs of those features are demonstrably uncorrelated, increasing their combined statistical significance and indicating a significant detection of CMB features at angular scales larger than a few degrees on top of the standard model. Despite numerous detailed investigations, we still lack a clear understanding of these large-scale features, which seem to imply a violation of statistical isotropy and scale invariance of inflationary perturbations. In this contribution we present a critical analysis of our current understanding and discuss several ideas of how to make further progress.
Schwarz D, Copi CJ, Huterer D, Starkman GD. CMB anomalies after Planck. Classical and Quantum Gravity. 2016;33(18): 184001.
Schwarz, D., Copi, C. J., Huterer, D., & Starkman, G. D. (2016). CMB anomalies after Planck. Classical and Quantum Gravity, 33(18), 184001. doi:10.1088/0264-9381/33/18/184001
Schwarz, D., Copi, C. J., Huterer, D., and Starkman, G. D. (2016). CMB anomalies after Planck. Classical and Quantum Gravity 33:184001.
Schwarz, D., et al., 2016. CMB anomalies after Planck. Classical and Quantum Gravity, 33(18): 184001.
D. Schwarz, et al., “CMB anomalies after Planck”, Classical and Quantum Gravity, vol. 33, 2016, : 184001.
Schwarz, D., Copi, C.J., Huterer, D., Starkman, G.D.: CMB anomalies after Planck. Classical and Quantum Gravity. 33, : 184001 (2016).
Schwarz, Dominik, Copi, Craig J., Huterer, Dragan, and Starkman, Glenn D. “CMB anomalies after Planck”. Classical and Quantum Gravity 33.18 (2016): 184001.
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