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astro-ph2005
Non-linearity of large-scale structure formation in the Universe
Lung-Yih Chiang
In the standard picture of cosmological structure formation, the Universe we see today is evolved under the gravitational instability from tiny random fluctuations. In this talk I…
astro-ph2005★ 15 cited
Correlations from Galactic foregrounds in the 1-year Wilkinson Microwave Anisotropy Probe WMAP data
Pavel D. Naselsky, Igor D. Novikov, Lung-Yih Chiang
We study a specific correlation in spherical harmonic multipole domain for cosmic microwave background (CMB) analysis. This group of correlation between Δl=4n, n=1,2... is caused b…
astro-ph2005★ 38 cited
Statistics of phase correlations as a test for non-Gaussianity of the CMB maps
Pavel Naselsky, Lung-Yih Chiang, Poul Olesen +1
Gaussianity is the very base for derivation of the cosmological parameters from the CMB angular power spectrum. Non-Gaussian signal, whether originated from experimental error or p…