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Observational Evidence for Coronal Magnetic Reconnection During the Two-Ribbon Flare of 21 May 1980

Published online by Cambridge University Press:  12 April 2016

R.A. Kopp  and
G. Poletto
R.A. Kopp
Affiliation:
Los Alamos National Laboratory Los Alamos, NM 87545
G. Poletto
Affiliation:
Osservatorio Astrofisico di Arcetri 50125, Firenze

Extract

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The 21 May event was a large two-ribbon flare which occurred in active region 2456 at S13W15. The flare was extensively documented by coordinated Hα, X-ray, and magnetograph observations. In particular, spatially resolved images in hard X-rays were obtained by the Hard X-ray Imaging Spectrometer (HXIS) aboard SMM. Hence this flare comprises an ideal example for studying the spatial relationship between the X-ray and Hα-ribbon morphologies. Although evidence has been reported for magnetic flux emergence at the beginning of this flare (Harvey, 1983), it appears that a potential field (rising source-surface) model may adequately represent the major large-scale features of the magnetic configuration believed to result from fieldline reconnection in the corona during the decay phase (Kopp and Pneuman, 1976).

Type
Session 1. Solar Astrophysics
Information
International Astronomical Union Colloquium , Volume 86: Eighth International Colloquium on Ultraviolet and X-ray Spectroscopy of Astrophysical and Laboratory Plasmas , 1984 , pp. 17 - 20
Copyright
Copyright © Naval Research Laboratory 1984. Publication courtesy of the Naval Research Laboratory, Washington, DC.

References

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Švestka, Z. and Poletto, G. 1984, Adv. in Space Res., in press.Google Scholar