Hurst exponent and planetary rings

Abstract

We test on Saturn's rings whether the Hurst exponent is a "robust" observable, in the sense that it returns consistent values for different observations of the same object. We calculate the exponent of the series corresponding to the optical depth as a function of the radius, as obtained from the grayscale value of Cassini pictures, as well as from stellar occultation data from Voyager missions.

arXiv comment4 pages, published in Boletín de la Asociación Argentina de Astronomía