Publikationsdatum:
2019-07-12
Beschreibung:
This paper examines the characteristics of the loop prominence of the April 27, 1981 solar flare event, which occurred on the limb (about 90 deg), using the results of H-alpha observations by the Astrophysical Observatory in Catania (Italy), the Purple Mountain Observatory in Nanking (China), together with hard-X-ray and gamma-ray burst data from the SMM Gamma-Ray Spectrometer. The analysis shows that there existed a second abrupt energy release for this event, almost 20 min after the end of the impulsive phase of the flare, which appears to be associated with the rapidity in upward motion or activation of the loop prominence. It is suggested that a possible mechanism for a second energy release may be the reconnection of new emerging magnetic field with the existing magnetic field lines.
Schlagwort(e):
SOLAR PHYSICS
Materialart:
Astrophysics and Space Science (ISSN 0004-640X); 153; 1 Ma; 95-108
Format:
text
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