An evidence of flare energy buildup and release related to magnetic shear and reconnection

A series of homologous flares is studied, as observed in the active region NOAA 2372 by the HXIS on the Solar Maximum Mission and ground based observatories. Changes in the flare homology, particularly those related to the location of the hard X-ray emission, show clear correlation with the developm...

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Bibliographic Details
Published in:Solar physics 1985-09, Vol.99 (1-2), p.159-166
Main Author: MACHADO, M. E
Format: Article
Language:English
Subjects:
Astronomy
Earth, ocean, space
Exact sciences and technology
Other topics on the solar system
Solar system
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Summary:A series of homologous flares is studied, as observed in the active region NOAA 2372 by the HXIS on the Solar Maximum Mission and ground based observatories. Changes in the flare homology, particularly those related to the location of the hard X-ray emission, show clear correlation with the development of magnetic shear within the active region. Following an early study (Machado et al., 1983) the authors propose that magnetic shear and reconnection are necessary for high-power energy release, but the former may not be a sufficient condition in an isolated magnetic loop. These results are discussed within the context of a broader study, to explore their generality.
ISSN:0038-0938
1573-093X
DOI:10.1007/BF00157306