TY - JOUR
T1 - Global universe anisotropy probed by the alignment of structures in the cosmic microwave background
AU - Wiaux, Yves
AU - Vielva, P.
AU - Martínez-González, E.
AU - Vandergheynst, Pierre
PY - 2006/4
Y1 - 2006/4
N2 - We question the global universe isotropy by probing the alignment of local structures in the cosmic microwave background (CMB) radiation. The original method proposed relies on a steerable wavelet decomposition of the CMB signal on the sphere. The analysis of the first-year Wilkinson Microwave Anisotropy Probe data identifies a mean preferred plane with a normal direction close to the CMB dipole axis, and a mean preferred direction in this plane, very close to the ecliptic poles axis. Previous statistical anisotropy results are thereby synthesized, but further analyses are still required to establish their origin.
AB - We question the global universe isotropy by probing the alignment of local structures in the cosmic microwave background (CMB) radiation. The original method proposed relies on a steerable wavelet decomposition of the CMB signal on the sphere. The analysis of the first-year Wilkinson Microwave Anisotropy Probe data identifies a mean preferred plane with a normal direction close to the CMB dipole axis, and a mean preferred direction in this plane, very close to the ecliptic poles axis. Previous statistical anisotropy results are thereby synthesized, but further analyses are still required to establish their origin.
UR - http://www.scopus.com/inward/record.url?scp=33646375441&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.96.151303
DO - 10.1103/PhysRevLett.96.151303
M3 - Article
C2 - 16712146
AN - SCOPUS:33646375441
SN - 0031-9007
VL - 96
JO - Physical Review Letters
JF - Physical Review Letters
IS - 15
M1 - 151303
ER -