title: Experimental confirmation of long-memory correlations in star-wander data.
abstract: In this Letter we have analyzed the temporal correlations of the angle-of-arrival fluctuations of stellar images. Experimentally measured data were carefully examined by implementing multifractal detrended fluctuation analysis. This algorithm is able to discriminate the presence of fractal and multifractal structures in recorded time sequences. We have confirmed that turbulence-degraded stellar wavefronts are compatible with a long-memory correlated monofractal process. This experimental result is quite significant for the accurate comprehension and modeling of the atmospheric turbulence effects on the stellar images. It can also be of great utility within the adaptive optics field.
authors: Luciano
authors: L
authors: Zunino
authors: Damián
authors: D
authors: Gulich
authors: Gustavo
authors: G
authors: Funes
authors: Aziz
authors: A
authors: Ziad