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New observations of coronal explosions and their interpretation

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Abstract

We 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 (a) the flare shows distinct single impulsive hard X-ray bursts and (b) 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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Authors and Affiliations

  1. Laboratory for Space Research, 3527, Utrecht, HS, The Netherlands

    André F. P. Lemmens & Cornelis De Jager

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  1. André F. P. Lemmens
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  2. Cornelis De Jager
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Lemmens, A.F.P., De Jager, C. New observations of coronal explosions and their interpretation. Sol Phys 106, 365–379 (1986). https://doi.org/10.1007/BF00158502

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  • DOI: https://doi.org/10.1007/BF00158502

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