Percolation and cluster analysis for (Delta-T)/T maps
Pavel Naselsky, D. Novikov · The Astrophysical Journal · 1995
In this Letter we discuss a method of filtering based on cluster analysis, and percolation for {DELTA}T/T of the cosmic microwave background maps. We show that this method provides unique information about the ionization history of the universe and that this is a realistic way to investigate the Gaussian nature of the cosmic microwave background fluctuations.