SMM observations of a compact flare interpretation and theoretical implications for flare theory

Details SMM observations of a compact flare interpretation and theoretical implications for flare theory SMM observations of a compact flare interpretation and theoretical implications for flare theory

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984iraj...16..226d&link_type=abstract

(Astronomical Science Group of Ireland, Meeting, University College, Dublin, Ireland, Sept. 29, 1983) Irish Astronomical Journal

Astronomy and Astrophysics

Astronomy

Energy Budgets, Solar Flares, Solar Maximum Mission, Solar X-Rays, X Ray Astronomy, Astronomical Maps, Energy Dissipation, High Energy Electrons, Line Spectra

Scientific paper

In the present completion of an energy balance analysis for a double impulsive, hard X-ray flare, it is deduced on the basis of spatial observations that both flares occurred in the same loop. From observations of the Ca XIX resonance line during the second flare's hard X-ray burst, it appears that two symmetrically displaced components are moving apart at thermal velocities of about 60 km/sec. These are interpretable in terms of in situ heating, where most of the fast electrons are stopped in the loop close to the site of the acceleration (and long before they reach the chromosphere) to produce the 'evaporated' up-flow. The two symmetrical components, and a high velocity downflow of 115 km/sec observed at the end of the second hard X-ray burst, are consistent with the flare eruption region's location high in the flare loop.

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