Using solar radio burst integrated fluxes to predict energetic proton flux increases

Details Using solar radio burst integrated fluxes to predict energetic proton flux increases Using solar radio burst integrated fluxes to predict energetic proton flux increases

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982afgl.reptt....b&link_type=abstract

Final Scientific Report Air Force Geophysics Lab., Hanscom AFB, MA. Space Physics Div.

Physics

Space Physics

Magnetic Fields, Satellite Observation, Solar Flares, Solar Protons, Solar Radio Bursts, Solar Wind Velocity, Statistical Correlation, Bivariate Analysis, Computers, Digital Systems, Regression Analysis, Tables (Data)

Scientific paper

Time integrated solar radio fluxes and their association with satellite observed solar energetic proton flux increases were studied. The time integration was only of the U portion of the radio burst flux increase. The best correlations between the integrated radio fluxes and the proton peak fluxes were realized when the radio fluxes were multiplied by the factor exp (-3B), where B is the angular distance, in radians, between the site of the flare and the solar footpoint of the magnetic field connection between the Sun and the Earth. The solar footpoint positions were determined from the solar wind speed. Two variate linear regressions were computed using the time integrated radio fluxes at five discrete radio frequencies in the 606 to 8800 MHz frequency interval and peak proton fluxes at 10 MeV and 30 MeV. Three variate and four variate linear regressions using different configurations of the time integrated radio fluxes were also computed. The best of all the correlations was found with the four variate regression of the three highest frequencies and the 30 MeV proton flux.

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