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

โœ Scribed by Jun-Ichi Sakai; Shinji Koide

Publisher
Springer
Year
1992
Tongue
English
Weight
614 KB
Volume
137
Category
Article
ISSN
0038-0938

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โœฆ Synopsis

We present a theory of filament eruption before the impulsive phase of solar flares. We show 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 1 at the onset of the impulsive phase. We give an important condition leading to filament eruptions, which relate to the state of the current sheet under the filament, where the magnetic energy can be released.

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