Power Fluctuations in the Wavelet Space: Large-Scale CMB Non-Gaussian Statistics

Abstract

We analyse the large-scale coherence of the CMB anisotropy field with non-gaussian initial conditions usind 2-point function of the power fluctuations in the wavelet space. Employing the multivariate Edgeworth expansion (MEE) we constrain the normalization for the cosmic string mass-per-unit-lenght. The obtained value is consistent with the results obtained from the simulations of the evolution of the string network and by other large scale studies.

9 pages, 4 figures in a single ps file

References in corpus (3)

• Tests for Non-Gaussian Statistics in the DMR Four-Year Sky Maps
• Power correlations in cosmology: limits on primordial non-Gaussian density fields
• Wavelet Analysis of One-Dimensional Cosmological Density Fluctuations

Cited by in corpus (1)

• Gravitational Evolution of the Large-Scale Probability Density Distribution: The Edgeworth & Gamma Expansions