Problems of solar flare theory

Details Problems of solar flare theory Problems of solar flare theory

Mar 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978raf....20.1310p&link_type=abstract

(Radiofizika, vol. 20, no. 9, 1977, p. 1310-1317.) Radiophysics and Quantum Electronics, vol. 20, no. 9, Mar. 20, 1978, p. 904-9

Physics

Particle Acceleration, Solar Flares, Solar Magnetic Field, Current Sheets, Energy Transfer, Magnetohydrodynamics, Plasma Turbulence, Shock Wave Propagation, Solar Radio Emission, Solar X-Rays, Stochastic Processes

Scientific paper

Recent observational data on solar flares are summarized, and possible interpretations are evaluated. The data include results of magnetic-field observations, hard and soft X-ray observations, and microwave observations. The main properties of solar flares are reviewed, the process of magnetic-field annihilation is analyzed, and some difficulties with the hypothesis of magnetic-field annihilation as the energy source for solar flares are considered. Two particle-acceleration mechanisms associated with solar flares are examined: runaway-electron production in more or less normal electric fields and stochastic acceleration by plasma turbulence, especially the modulational instability. The roles of shock waves and current sheets in the solar-flare phenomenon are briefly discussed.

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