Dynamics of flare sprays

  title={Dynamics of flare sprays},
  author={Einar Tandberg-Hanssen and Sara F. Martin and Richard T. Hansen},
  journal={Solar Physics},
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 pass-band filters, multi-slit spectroscopy and extended angular field coronagraphs). From combined analysis of 13 well-observed sprays which occurred between 1969–1974 we conclude that (i) the spray material originates from a preexisting active region filament which undergoes increased… 
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