Distribution of Flare Energies Based on Independent Reconnecting Structures

Details Distribution of Flare Energies Based on Independent Reconnecting Structures Distribution of Flare Energies Based on Independent Reconnecting Structures

Jul 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002soph..208...33w&link_type=abstract

Solar Physics, v. 208, Issue 1, p. 33-42 (2002).

Physics

6

Scientific paper

A model is presented to explain the observed frequency distribution of flare energies, based on independent flaring at a number of distinct topological structures (separators) within active-region magnetic fields. The model is a modification and generalization of a recent model due to Craig (2001), and reconciles that model with the observed flare waiting-time distribution, and the observed absence of a flare waiting-time versus energy relationship. The basic assumptions of the model are that flares of energy E~l2 occur at separators of length l, and that the frequency of flaring at a separator is defined by the Alfvén transit time of the structure. To reproduce the observed distribution of flare energies the model requires a probability distribution P(l)~l-1 of separator lengths l within active regions. This prediction of the model is in principle testable. A theoretical origin for this distribution is also discussed.

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