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Is the Low-ℓMicrowave Background Cosmic?
Open accessAbstract
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.
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Seemingly anomalous correlations have already been detected among the low-multipole CMB anisotropies, which might indicate deviations from statistical isotropy in the inflationary spectrum.
“Indeed, seemingly anomalous correlations have already been detected among the low-multipole CMB anisotropies [20,21,22,23,24], which might indicate deviations from statistical isotropy in the inflationary spectrum.”
From Observable effects of anisotropic bubble nucleation (2010) · cites this paper as [23]
The Abstract reports statistically significant low-multipole correlations and says they are difficult to reconcile with standard inflationary cosmology’s prediction of statistical isotropy. It does not establish that the inflationary spectrum itself is anisotropic; the authors also suggest a local source or an unrecognized systematic as possible explanations. The indexed copy supplies no page number for these passages. (LLM, conf=0.82)
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Bennett, C. L., Halpern, M., Hinshaw, G., Jarosik, N., Kogut, A., Limon, M., Meyer, S. S., Page, L., Spergel, D. N., Tucker, G. S., et al. (2003) · The Astrophysical Journal Supplement Series · doi:10.1086/377253 · Cited by 4,860
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FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION
Komatsu, E., Dunkley, J., Nolta, M. R., Bennett, C. L., Gold, B., Hinshaw, G., Jarosik, N., Larson, D., Limon, M., Page, L., et al. (2009) · The Astrophysical Journal Supplement Series · doi:10.1088/0067-0049/180/2/330 · Cited by 5,786
Observable effects of anisotropic bubble nucleation
Blanco-Pillado, J. J., & Salem, M. P. (2010) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2010/07/007 · Cited by 44
Abdalla, E., Abellán, G. F., Aboubrahim, A., Agnello, A., Akarsu, Ö., Akrami, Y., Alestas, G., Aloni, D., Amendola, L., Anchordoqui, L. A., et al. (2022) · Journal of High Energy Astrophysics · doi:10.1016/j.jheap.2022.04.002 · Cited by 37
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Metadata
- Authors
- Schwarz, D. J., Starkman, G. D., Huterer, D., & Copi, C. J.
- Affiliations
- European Organization for Nuclear Research (CH)
- Case Western Reserve University (US)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-11-23
- Volume
- 93
- Issue
- 22
- Pages
- 221301-221301
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2013101909
- Cited by
- 488
- References
- 1
- Citations by year
- 2026: 13 · 2025: 13 · 2024: 13 · 2023: 9 · 2022: 10 · 2021: 6 · 2020: 10 · 2019: 5 · 2018: 11 · 2017: 11 · 2016: 22 · 2015: 25 · 2014: 15 · 2013: 19 · 2012: 26
- FWCI
- 20.71
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- PUB – Publications at Bielefeld University (Bielefeld University) (submittedVersion)
- Publikationen an der Universität Bielefeld (Universität Bielefeld) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Cosmology and Gravitation Theories
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Noncommutative and Quantum Gravity Theories
- Keywords
- cosmic microwave background, quadrupole, cosmological dipole, supergalactic plane, cosmic inflation, large-angle correlations
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