Giant solar arches and coronal mass ejections in November 1980

Details Giant solar arches and coronal mass ejections in November 1980 Giant solar arches and coronal mass ejections in November 1980

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989soph..122..131s&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 122, no. 1, 1989, p. 131-143.

Physics

8

Coronal Loops, Solar Flares, Stellar Mass Ejection, Coronagraphs, Helios A, Imaging Spectrometers

Scientific paper

Data from the Solwind coronagraph and photometers aboard Helios-A are used to examine coronal mass ejections from an active region which produced a series of giant postflare coronal arches. HXIS X-ray observations reveal that in several cases underlying flares did not disrupt these arch structures, but simply revived them, enhancing their temperature, density and brightness. Reliable evidence is found that two dynamic flares which clearly revived the preexisting giant arch were not associated with any mass ejection. After two other flares, which were associated with mass ejections, the arch might have been newly formed when the ejection was over. In one of these cases, however, the arch had typical characteristics of a revived structure, so that it is likely that it survived a powerful mass ejection nearby.

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