Unique SMM observations of an impulsive double solar flare: Enhanced neon abundance
Abstract
The Solar Maximum Mission Flat Crystal Spectrometer observed a GOES M5 double impulsive flare on 05 November 1980. Simultaneous spectra of seven bright soft X-ray resonance lines provide information over a broad temperature range (2-35 × 106 K) and are available throughout the event. A differential emission measure analysis reveals that the flux of the Ne IX resonance line is larger than expected. Various sources of contamination, non-equilibrium and multi-thermal effects, and possible errors in the atomic physics calculations are investigated and eliminated as the source of the unexpected flux, and it is suggested, rather, that the neon abundance is enhanced in this flare.
- Publication:
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Advances in Space Research
- Pub Date:
- September 1993
- DOI:
- 10.1016/0273-1177(93)90500-B
- Bibcode:
- 1993AdSpR..13i.325S