Study of the July 3, 1974 proton flare

Details Study of the July 3, 1974 proton flare Study of the July 3, 1974 proton flare

Dec 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975urbar..60...57h&link_type=abstract

Urania (Madrid), vol. 60, July-Dec. 1975, p. 57-76. In Spanish.

Mathematics

Logic

H Alpha Line, Solar Flares, Solar Protons, Absorption Spectra, Corpuscular Radiation, Electromagnetic Radiation, Fine Structure, Sunspots, Umbras

Scientific paper

An analysis is presented on the proton flare occurring at 8.01 UT on July 3, 1974. The morphological evolution of the flare as observed in the H-alpha line is reported, with reference to both corpuscular emission and associated EM radiation. A tenuous filament observed in absorption at plus 1.0 A at flare maximum is pointed out. Penetration of the flare into the spot umbra is noted. Some questions are posed on the time of onset of the filament, on whether the filament is indicative of greater umbral field intensity or greater energy flux.

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