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Cited by 496

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Examination of Evidence for a Preferred Axis in the Cosmic Radiation Anisotropy

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Land, Kate, Magueijo, João·2005·Physical Review Letters

Abstract

We examine previous claims for a preferred axis at (b,l) approximately (60,-100) in the cosmic radiation anisotropy, by generalizing the concept of multipole planarity to any shape preference. Contrary to earlier claims, we find that the amount of power concentrated in planar modes for l = 2,3 is not inconsistent with isotropy and Gaussianity. The multipoles' alignment, however, is indeed anomalous, and extends up to l = 5 rejecting statistical isotropy with a probability in excess of 99.9%. There is also an uncanny correlation of azimuthal phases between l = 3 and l = 5. We are unable to blame these effects on foreground contamination or large-scale systematic errors. This reappraisal may be crucial in identifying the theoretical model behind the anomaly.

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Metadata

Authors
Land, K., & Magueijo, J.
Venue
Physical Review Letters
Published
2005-08-11
Volume
95
Issue
7
Pages
071301-071301
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W1530988995
Cited by
496
References
2
FWCI
24.40
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Examination of Evidence for a Preferred Axis in the Cosmic Radiation Anisotropy. https://app.cochat.ai/papers/10.1103/physrevlett.95.071301
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Land, K., & Magueijo, J. (2005). Examination of Evidence for a Preferred Axis in the Cosmic Radiation Anisotropy. Physical Review Letters. https://doi.org/10.1103/physrevlett.95.071301

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