Physics
Scientific paper
Mar 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985soph...96..129a&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 96, March 1985, p. 129-142. Research supported by the Consiglio Nazionale delle Ricerche.
Physics
49
Chromosphere, Coronal Loops, Evaporation, Heat Budget, Solar Flares, Solar Spectrometers, Doppler Effect, Emission Spectra, Mass Flow, Solar Maximum Mission, Solar Spectra, Solar X-Rays, Thermal Plasmas
Scientific paper
Attention is given to the initial phase of chromospheric evaporation in the solar flare observed by the Solar Maximum Mission's Hard X-ray Imaging Spectrometer, on May 21, 1980. Images of the flaring region in the 3.5-8.0 and 16-30 keV energy bands indicate that both the soft and hard X-ray emissions are localized near the footpoints early in the event, while they are weaker from the rest of the flaring loop system; this implies that there is no heating taking place at the top of the loops, while energy is primarily deposited at their base. Observations of the energy deposition in the chromosphere by electrons accelerated in the flare region to energies above 25 keV furnish further support for an interpretation of plasma upflows as the mechanism responsible for the formation of the soft X-ray flare, identified with chromospheric evaporation.
Antonucci Ester
Dennis Brian R.
Gabriel Alan H.
Simnett George M.
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