The cosmic-ray spectra of H-1, H-2, and He-4 as a test of the origin of the hydrogen superfluxes at solar minimum modulation

Details The cosmic-ray spectra of H-1, H-2, and He-4 as a test of the origin of the hydrogen superfluxes at solar minimum modulation The cosmic-ray spectra of H-1, H-2, and He-4 as a test of the origin of the hydrogen superfluxes at solar minimum modulation

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...294..455b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 294, July 15, 1985, p. 455-462.

Astronomy and Astrophysics

Astrophysics

15

Abundance, Energy Spectra, Galactic Cosmic Rays, Helium Isotopes, Hydrogen Isotopes, Proton Flux Density, Solar Activity Effects, Anomalies, Deuterium, Explorer 50 Satellite, Particle Telescopes, Solar Cycles

Scientific paper

During the most recent (1972 - 1977) period of minimum solar modulation, it was discovered in the low-energy cosmic-ray spectra at 1 AU that (1) anomalous spectral components of 4He and heavier nuclei appeared; and (2) proton and helium "superfluxes" appeared which exceeded by up to 80% and 30%, respectively, the flux levels of the previous solar minimum in 1965. The simultaneous presence of these two phenomena has been investigated to determine whether the proton superflux is part of the proton galactic cosmic rays or is part of the anomalous nuclear components. It is concluded that the superfluxes are of cosmic-ray origin and, at 1 AU, result from reduced levels of residual modulation during the 1972 - 1977 solar minimum.

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