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Authors: Consolini, G.* 
De Michelis, P.* 
Title: Fractal time statistics of AE-index burst waiting times: evidence of metastability
Issue Date: 2002
Series/Report no.: 5-6 / 9 (2002)
Keywords: magnetospheric physics
magnetotail dynamics
fractal time statistics
Subject Classification01. Atmosphere::01.03. Magnetosphere::01.03.03. Magnetospheric physics 
01. Atmosphere::01.03. Magnetosphere::01.03.04. Structure and dynamics 
Abstract: Recent observations and analyses evidenced that the magnetotail, as well as the magnetospheric dynamics are characterised by a scale-free behaviour and intermittence. These results, along with numerical simulations on cellular automata, suggest that the observed scale-invariance may be due to forced and/or self-organised criticality (FSOC), meaning that the magnetotail operates near a marginally stable state (Chang, 1999). On the other hand, it was underlined that a complex magnetic field topology in the geotail regions may play a relevant role in the impulsive energy relaxation (Consolini and Chang, 2001).
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