Comment on the existence of a long range correlation in the geomagnetic disturbance storm time (Dst) index
نویسنده
چکیده
Very recently (Banerjee et al. in Astrophys. Space, doi:1007/s 10509-011-0836-1, 2011) the statistics of geomagnetic Disturbance storm (Dst) index have been addressed, and the conclusion from this analysis suggests that the underlying dynamical process can be modeled as a fractional Brownian motion with persistent long-range correlations. In this comment we expose several misconceptions and flaws in the statistical analysis of that work. On the basis of these arguments, the former conclusion should be revisited.
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