TY - JOUR
T1 - Gaussian nature of the COBE data from multipoint correlations
AU - Vainshtein, Samuel I.
AU - Malagoli, Andrea
AU - Sreenivasan, Katepalli R.
PY - 1996
Y1 - 1996
N2 - Important information about the early universe can be obtained from a study of the cosmic background radiation (CBR) in the microwave range. We study high-order correlation and structure functions of temperature fluctuations collected from the first two years of Differential Microwave Radiometer (DMR) observations from the Cosmic Background Explorer (COBE) satellite. The intent is to determine whether the radiation data possess significant deviations from Gaussianity. The most difficult problem in drawing meaningful conclusions is the presence of instrumental noise, which is quite strong even after a two-year averaging has been performed. We have taken into account the noise in various ways. Within the limitations imposed by the noise, our study shows that the fluctuations are quite likely to be Gaussian-like. The results can, therefore, be said to favor the inflation scenario of the universe.
AB - Important information about the early universe can be obtained from a study of the cosmic background radiation (CBR) in the microwave range. We study high-order correlation and structure functions of temperature fluctuations collected from the first two years of Differential Microwave Radiometer (DMR) observations from the Cosmic Background Explorer (COBE) satellite. The intent is to determine whether the radiation data possess significant deviations from Gaussianity. The most difficult problem in drawing meaningful conclusions is the presence of instrumental noise, which is quite strong even after a two-year averaging has been performed. We have taken into account the noise in various ways. Within the limitations imposed by the noise, our study shows that the fluctuations are quite likely to be Gaussian-like. The results can, therefore, be said to favor the inflation scenario of the universe.
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U2 - 10.1103/PhysRevD.53.6796
DO - 10.1103/PhysRevD.53.6796
M3 - Article
AN - SCOPUS:3042876463
SN - 1550-7998
VL - 53
SP - 6796
EP - 6804
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 12
ER -