ar X iv : a st ro - p h / 03 10 70 6 v 1 2 4 O ct 2 00 3 Tests of Gaussianity
نویسندگان
چکیده
We review two powerful methods to test the Gaussianity of the cosmic microwave background (CMB): one based on the distribution of spherical wavelet coefficients and the other on smooth tests of goodness-of-fit. The spherical wavelet families proposed to analyse the CMB are the Haar and the Mexican Hat ones. The latter is preferred for detecting non-Gaussian homogeneous and isotropic primordial models containing some amount of skewness or kurtosis. Smooth tests of goodness-of-fit have recently been introduced in the field showing some interesting properties. We will discuss the smooth tests of goodness-of-fit developed by Rayner and Best for the univariate as well as for the multivariate analysis.
منابع مشابه
ar X iv : a st ro - p h / 06 04 29 8 v 1 1 3 A pr 2 00 6 the Non - Gaussianity of Racetrack Inflation Models
In this paper, we use the result in [7] to calculate the non-Gaussianity of the racetrack models in [3, 5]. Our results show that the nonGaussianity in [3] is reasonable, while the non-Gaussianity in [5] is beyond the observational limits.
متن کاملar X iv : a st ro - p h / 06 04 29 8 v 2 1 4 A pr 2 00 6 the Non - Gaussianity of Racetrack Inflation Models
In this paper, we use the result in [7] to calculate the non-Gaussianity of the racetrack models in [3, 5]. Our results show that the nonGaussianity in [3] is reasonable, while the non-Gaussianity in [5] is beyond the observational limits. PACS: 98.80.Cq, 98.80.Jk, 04.20.Gz
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