Preflare energy build-up in a filament circuit

Details Preflare energy build-up in a filament circuit Preflare energy build-up in a filament circuit

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987soph..107...95m&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 107, no. 1, 1987, p. 95-108. Research supported by NASA and National Academy of Sciences.

Physics

14

Magnetic Field Configurations, Solar Flares, Solar Magnetic Field, Solar Prominences, Stellar Models, Equivalent Circuits, Free Energy, Plasma Currents, Plasma Heating, Three Dimensional Models

Scientific paper

The May 16, 1981 flare observed at Debrecen is studied by extending to a fully three-dimensional model the two-dimensional Van Tend and Kuperus (1978) scenario for preflare energy build-up. It is shown that there are 10 to the 33rd ergs of free energy available to explain the subsequent large two-ribbon flare. As a result of the three-dimensional character of the present model, this estimate is an order of magnitude larger than that made by Van Tend. It is confirmed that the global form of the preflare circuit is highly important in determining the amount of energy stored in the preflare configuration. The present model gives correct predictions for the independently observed photospheric flow velocity and current strength in filaments.

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