Soft X-ray observations of high-velocity features in the 29 June 1980flares.
Abstract
During the impulsive phase of two flares on 29 June 1980, short lived emission line features have been observed in soft X-rays, near the resonance lines of Fe XXV and Ca XIX, by the Bent Crystal Spectrometer on the Solar Maximum Mission. They are coincident with hard X-ray bursts and with the onset of Hα sprays. They appear to result from a different type of phenomenon from the unresolved blue-shifted component from the resonance lines reported by Feldman et al. (1980) and Antonucci et al. (1982). The authors believe that these discrete line features are due to Doppler-shifted resonance line emission from well collimated, moving plasma with large line-of-sight velocities.
- Publication:
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Rutherford Appleton Laboratory Report
- Pub Date:
- 1985
- Bibcode:
- 1985RALR...85.....B
- Keywords:
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- Solar Flares:Soft X Rays