The Statistical Physics of Solar Active Regions and the Fundamental Nature of Solar Flares

Details The Statistical Physics of Solar Active Regions and the Fundamental Nature of Solar Flares The Statistical Physics of Solar Active Regions and the Fundamental Nature of Solar Flares

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995apj...446l.109l&link_type=abstract

Astrophysical Journal Letters v.446, p.L109

Astronomy and Astrophysics

Astronomy

30

Instabilities, Plasmas, Stars: Activity, Stars: Flare, Sun: Activity, Sun: Flares, Sun: Magnetic Fields

Scientific paper

We demonstrate that solar active regions are examples of a class of driven dissipative systems whose long-term statistical behavior is characterized by a power-law distribution of energy-dissipating avalanches (Lu 1995a). This explains why solar flares are power-law distributed, as well as how the long-time macroscopic behavior of solar active regions can be well approximated and understood using simple cellular automata models (Lu & Hamilton 1991; Lu et al. 1993). This work represents a first step toward understanding the macroscopic statistical physics of active regions and the fundamental nature of solar flares.

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