Is the Low-ℓMicrowave Background Cosmic?

2004/03/31 by Dominik J. Schwarz, Glenn D. Starkman, Dragan Huterer +1 · 5 citations
Physics and Astronomy · #Advanced Differential Geometry Research #Cosmology and Gravitation Theories #Radio Astronomy Observations and Technology #astro-ph

paper · pdf · doi:10.1103/physrevlett.93.221301

published as Phys.Rev.Lett. 93 (2004) 221301 · 4 pages, 3 figures; more figures available at: http://www.phys.cwru.edu/projects/mpvectors/ PRL in press version

openalex publication_date 2004/11/23 · arxiv created 2004/11/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The large-angle (low-l) correlations of the cosmic microwave background exhibit several statistically significant anomalies compared to the standard inflationary cosmology. We show that the quadrupole plane and the three octopole planes are far more aligned than previously thought (99.9% C.L.). Three of these planes are orthogonal to the ecliptic at 99.1% C.L., and the normals to these planes are aligned at 99.6% C.L. with the direction of the cosmological dipole and with the equinoxes. The remaining octopole plane is orthogonal to the supergalactic plane at 99.6% C.L.

Citations

• A Measurement of the Angular Power Spectrum of the Cosmic Microwave Background from [CLC][ITAL]l[/ITAL][/CLC] = 100 to 400
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• High resolution foreground cleaned CMB map from WMAP

Cited by

• Planck 2013 results. XXIII. Isotropy and statistics of the CMB
• Large-angle correlation anomalies and odd-parity preference in CMB data
• Large‐Angle Anomalies in the CMB
• Probing the isotropy of cosmic acceleration traced by Type Ia supernovae
• Cosmology of a scalar field coupled to matter and an isotropy-violating Maxwell field