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Magnetic energy conversion, magnetospheric substorms and solar flares

Abstract

An explosive conversion of magnetic energy has long been suggested as the cause of various electrodynamic processes in astrophysical conditions, such as auroral magnetospheric substorms, solar flares, stellar flares and some galactic scale processes1–6. It is generally believed that the magnetic energy is stored in a certain region before the onset of those phenomena and that the conversion takes place spontaneously or by triggering. Here it is suggested that the magnetospheric substorm is a direct consequence of increasing power generated by the solar wind–magnetosphere dynamo, rather than of a hypothetical sudden conversion of the stored magnetic energy.

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