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A heavenly example of scale-free networks and self-organized criticality

✍ Scribed by M. Paczuski; D. Hughes

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
213 KB
Volume
342
Category
Article
ISSN
0378-4371

No coin nor oath required. For personal study only.

✦ Synopsis

The sun provides an explosive, heavenly example of self-organized criticality. Sudden bursts of intense radiation emanate from rapid rearrangements of the magnetic ΓΏeld network in the corona. Avalanches are triggered by loops of ux that reconnect or snap into lower-energy conΓΏgurations when they are overly stressed. Our recent analysis of observational data reveal that the loops (links) and footpoints (nodes), where they attach on the photosphere, embody a scale-free network. The statistics of the avalanches and of the network structure are uniΓΏed through a simple dynamical model where the avalanches and network co-generate each other into a complex, critical state. This particular example points toward a general dynamical mechanism for self-generation of complex networks.

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