A theory of filament eruptions before the impulsive phase of solar flares

Details A theory of filament eruptions before the impulsive phase of solar flares A theory of filament eruptions before the impulsive phase of solar flares

Feb 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992soph..137..293s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 137, Feb. 1992, p. 293-306.

Physics

7

Magnetic Field Configurations, Solar Flares, Solar Magnetic Field, Solar Prominences, Current Sheets, Magnetic Field Reconnection, Magnetohydrodynamic Flow

Scientific paper

A theory of filament eruption before the impulsive phase of solar flares is presented. It is shown that the upward motion of the magnetic X-point tracing the filament eruption begins several minutes before the impulsive phase of the flare, where the explosive magnetic reconnection starts at the X-point magnetic field configuration located under the filament. No change occurs in the character of the motion of the X-point during the onset of the explosive magnetic reconnection. The upward speed of the X-point is about 110 km/s at the onset of the impulsive phase. An important condition leading to filament eruptions is given which relate to the state of the current sheet under the filament, where the magnetic energy can be released.

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