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In this letter we have analyzed the temporal correlations of theangle-of-arrival fluctuations of stellar images. Experimentally measured datawere carefully examined by implementing multifractal detrended fluctuationanalysis. This algorithm is able to discriminate the presence of fractal andmultifractal structures in recorded time sequences. We have confirmed thatturbulence-degraded stellar wavefronts are compatible with a long-memorycorrelated monofractal process. This experimental result is quite significantfor the accurate comprehension and modeling of the atmospheric turbulenceeffects on the stellar images. It can also be of great utility within theadaptive optics field.

Experimental confirmation of long-memory correlations in star-wander data