Abstract
THE recent discovery, by equipment carried in satellites and balloons, that the terrestrial atmosphere is frequently bombarded by solar protons of energies 30–300 MeV.1,2, has given rise to much speculation concerning the origin of these low-energy cosmic rays, and their relation to solar radio bursts, flares, and terrestrial disturbances. In this communication we seek to elucidate these problems from a consideration of radio spectral observations of the Sun. The radio data were obtained at the Harvard Radio Astronomy Station, Fort Davis, Texas, with sweep-frequency receivers3 covering the range 25–580 Mc./s. The equipment scans the entire frequency-range three times per second, and a continuous record of solar radio bursts has been obtained from sunrise to sunset for the past three years.
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THOMPSON, A., MAXWELL, A. Solar Radio Bursts and Low-energy Cosmic-rays. Nature 185, 89–90 (1960). https://doi.org/10.1038/185089b0
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DOI: https://doi.org/10.1038/185089b0
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