Avalanche models for solar flares (Invited Review)

Author: Charbonneau Paul   McIntosh Scott   Liu Han-Li   Bogdan Thomas  

Publisher: Springer Publishing Company

ISSN: 0038-0938

Source: Solar Physics, Vol.203, Iss.2, 2001-11, pp. : 321-353

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Abstract

This paper is a pedagogical introduction to avalanche models of solar flares, including a comprehensive review of recent modeling efforts and directions. This class of flare model is built on a recent paradigm in statistical physics, known as self-organized criticality. The basic idea is that flares are the result of an ‘avalanche’ of small-scale magnetic reconnection events cascading through a highly stressed coronal magnetic structure, driven to a critical state by random photospheric motions of its magnetic footpoints. Such models thus provide a natural and convenient computational framework to examine Parker's hypothesis of coronal heating by nanoflares.