TY - JOUR
T1 - Extended self-similarity of the small-scale cosmic microwave background anisotropy
AU - Bershadskii, A.
AU - Sreenivasan, K. R.
PY - 2003/12/1
Y1 - 2003/12/1
N2 - The extended self-similarity (ESS) of cosmic microwave background (CMB) radiation has been studied using recent data obtained by the space-craft based Wilkinson Microwave Anisotropy Probe. Using the ESS and the high angular scale resolution (arcminutes) of the data it is shown that the CMB temperature space increments exhibit considerable and systematic declination from Gaussianity for high order moments at the small angular scales. Moreover, the CMB space increment ESS exponents have remarkably close values to the ESS exponents observed in turbulence (in magnetohydrodynamic turbulence).
AB - The extended self-similarity (ESS) of cosmic microwave background (CMB) radiation has been studied using recent data obtained by the space-craft based Wilkinson Microwave Anisotropy Probe. Using the ESS and the high angular scale resolution (arcminutes) of the data it is shown that the CMB temperature space increments exhibit considerable and systematic declination from Gaussianity for high order moments at the small angular scales. Moreover, the CMB space increment ESS exponents have remarkably close values to the ESS exponents observed in turbulence (in magnetohydrodynamic turbulence).
KW - Cosmic microwave background
KW - Non-Gaussian multiscaling
KW - Primordial turbulence
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U2 - 10.1016/j.physleta.2003.09.079
DO - 10.1016/j.physleta.2003.09.079
M3 - Article
AN - SCOPUS:1042278969
SN - 0375-9601
VL - 319
SP - 21
EP - 23
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 1-2
ER -