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Small Deviations from Gaussianity and The Galaxy Cluster Abundance Evolution | | A.L.B. Ribeiro
; C.A. Wuensche
; P.S. Letelier
; | | Date: |
14 Mar 2000 | | Subject: | astro-ph | | Affiliation: | Unicamp), C.A. Wuensche (Inpe) and P.S. Letelier (Unicamp | | Abstract: | We raise the hypothesis that the density fluctuations field which originates the growth of large scale structures is a combination of two or more distributions. By applying the statistical analysis of finite mixture distributions to a specific combination of Gaussian plus non-Gaussian random fields, we studied the case where just a small departure from Gaussianity is allowed. Our results suggest that even a very small level of non-Gaussianity may introduce significant changes in the cluster abundance evolution rate. | | Source: | arXiv, astro-ph/0003193 | | Services: | Forum | Review | PDF | Favorites | |
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