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

Luciano Zunino, Damián Gulich, Gustavo Funes, Aziz Ziad

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

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.
Original languageAmerican English
Pages (from-to)3718-3721
Number of pages4
JournalOptics Letters
Volume39
Issue number13
DOIs
StatePublished - 1 Jul 2014
Externally publishedYes

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