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Fractal time statistics of AE-index burst waiting times: evidence of metastability
- Publication date
- Publisher
- EGU
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)