New observations of coronal explosions and their interpretation

Details New observations of coronal explosions and their interpretation New observations of coronal explosions and their interpretation

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..106..365l&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 106, Aug. 1986, p. 365-378.

Astronomy and Astrophysics

Astronomy

7

Solar Corona, Solar Flares, Spaceborne Astronomy, Stellar Spectrophotometry, X Ray Imagery, Convection Currents, Explosions, Plasma Dynamics, Solar Maximum Mission, Stellar Models

Scientific paper

The authors examined five flares, observed by the Hard X-Ray Imaging Spectrometer aboard the Solar Maximum Mission, for the occurrence of coronal explosions and found that these occur only if (1) the flare shows distinct single impulsive hard X-ray bursts and (2) it shows upward (convective) motions during the initial part of the impulsive phase. Coronal explosions are therefore explained as a manifestation of plasma streaming laterally out of the flare kernel(s). There is some evidence that streaming occurs into a number of cylindrical fluxtubes which spread over a larger area, thus supporting the 'spaghetti-bundle model' for the flaring region.

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