Solar flare proton rigidity spectra deduced from cosmic ray neutron monitor observations

Details Solar flare proton rigidity spectra deduced from cosmic ray neutron monitor observations Solar flare proton rigidity spectra deduced from cosmic ray neutron monitor observations

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974jgr....79.4149l&link_type=abstract

Journal of Geophysical Research, vol. 79, Oct. 1, 1974, p. 4149-4155.

Physics

18

Energy Spectra, Neutron Counters, Proton Flux Density, Solar Flares, Solar Neutrons, Solar Protons, Cut-Off, Rigidity, Satellite Observation

Scientific paper

The solar flare proton rigidity spectra for several flares occurring between 1967 and 1972 have been deduced from the ground level cosmic ray neutron monitor observations. To obtain consistent agreement for all the ground level events (GLEs) analyzed, the specific yield functions of Lockwood and Webber (1967) must be reduced slightly below P = 1.6 GV. The typical spectral indices of solar cosmic rays deduced for GLEs vary from 4 to 6 if the differential spectrum is represented by KP to the minus gamma power. Only occasionally is the spectrum as steep as 8 or 9. The observed spectral index is independent of the magnitude of the integral solar proton flux above 1 GV.

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