Prompt solar proton events and coronal mass ejections

Details Prompt solar proton events and coronal mass ejections Prompt solar proton events and coronal mass ejections

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978soph...57..429k&link_type=abstract

Solar Physics, vol. 57, Apr. 1978, p. 429-443.

Physics

44

Solar Corona, Solar Protons, Solar X-Rays, Stellar Mass Ejection, Coronagraphs, Proton Flux Density, Skylab Program, Solar Magnetic Field, X Ray Telescopes

Scientific paper

Data from the HAO white-light coronagraph and the X-ray telescope on Skylab have been used to investigate the coronal manifestations of 18 prompt solar proton events observed on the IMP 7 spacecraft during the Skylab period. Evidence is found that a mass-ejection event is a necessary condition for the occurrence of a prompt proton event. Mass-ejection events can be observed directly in the white-light coronagraph when they occur near the limb and inferred from the presence of a long-decay X-ray event when they occur on the disk. It is suggested that: (1) the occurrence of mass-ejection events facilitates the escape of protons - whether accelerated at low or high altitudes - to the interplanetary medium; and (2) there may exist a proton acceleration region above or around the outward moving ejecta far above the flare site.

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