Studies on post-flare loop prominence of 1981 April 27

Details Studies on post-flare loop prominence of 1981 April 27 Studies on post-flare loop prominence of 1981 April 27

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.153...95z&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 153, no. 1, March 1989, p. 95-108. Research supported by the Max-Planck-In

Astronomy and Astrophysics

Astrophysics

4

Coronal Loops, Solar Flares, Solar Magnetic Field, Solar Prominences, Gamma Ray Bursts, H Alpha Line, Magnetic Flux, Particle Acceleration, Solar Limb, Solar X-Rays

Scientific paper

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.

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