Missing Power vs low-l Alignments in the Cosmic Microwave Background: No Correlation in the Standard Cosmological Model - Astrophysics > Cosmology and Nongalactic AstrophysicsReport as inadecuate




Missing Power vs low-l Alignments in the Cosmic Microwave Background: No Correlation in the Standard Cosmological Model - Astrophysics > Cosmology and Nongalactic Astrophysics - Download this document for free, or read online. Document in PDF available to download.

Abstract: On large angular scales greater than about 60 degrees, the two-pointangular correlation function of the temperature of the cosmic microwavebackground CMB, as measured outside of the plane of the Galaxy by theWilkinson Microwave Anisotropy Probe, shows significantly lower large-anglecorrelations than expected from the standard inflationary cosmological model.Furthermore, when derived from the full CMB sky, the two lowest cosmologicallyinteresting multipoles, the quadrupole l=2 and the octopole l=3, areunexpectedly aligned with each other. Using randomly generated full-sky andcut-sky maps, we investigate whether these anomalies are correlated at astatistically significant level. We conclusively demonstrate that, assumingGaussian random and statistically isotropic CMB anisotropies, there is nostatistically significant correlation between the missing power on largeangular scales in the CMB and the alignment of the l=2 and l=3 multipoles. Thechance to measure the sky with both such a lack of large-angle correlation andsuch an alignment of the low multipoles is thus quantified to be below 10^{-6}.



Author: Devdeep Sarkar Michigan, Dragan Huterer Michigan, Craig J. Copi CWRU, Glenn D. Starkman CWRU, Dominik J. Schwarz Bielefeld

Source: https://arxiv.org/







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