Dynamics of flare sprays

Details Dynamics of flare sprays Dynamics of flare sprays

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980soph...65..357t&link_type=abstract

Solar Physics, vol. 65, Mar. 1980, p. 357-368.

Physics

43

Dynamic Characteristics, Solar Activity, Solar Flares, Chromosphere, Coronagraphs, Filaments, Morphology, Time Response

Scientific paper

During solar cycle No. 20 new insight into the flare-spray phenomenon has been attained due to several innovations in solar optical-observing techniques (higher spatial resolution cinema-photography, tunable passband filters, multislit spectroscopy and extended angular field coronagraphs). From combined analysis of 13 well-observed sprays which occurred between 1969-1974 it is concluded that (1) the spray material originates from a preexisting active region filament which undergoes increased absorption some tens of minutes prior to the abrupt chromospheric brightening at the 'flare-start', and (2) the spray material is confined within a steadily expanding, loop-shaped (presumable magnetically controlled) envelope with part of the materials draining back down along one or both legs of the loop.

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