Spectral analysis of the Forbush decrease of 13 July 1982

Details Spectral analysis of the Forbush decrease of 13 July 1982 Spectral analysis of the Forbush decrease of 13 July 1982

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....5..242v&link_type=abstract

In NASA. Goddard Space Sciences 19th Intern. Cosmic Ray Conf., Vol. 5 p 242-245 (SEE N85-34991 23-93)

Physics

Cosmic Rays, Flux Density, Forbush Decreases, Solar Flares, Spectrum Analysis, Energy Spectra, Geomagnetism, Maximum Entropy Method, Neutron Counters, Resolution, Solar Oscillations

Scientific paper

The maximum entropy method has been applied in the spectral analysis of high-energy cosmic-ray intensity during the large Forbush event of July 13, 1982. An oscillation with period of about 2 hours and amplitude of 1 to 3% was found to be present during the decrease phase. This oscillation can be related to a similar periodicity in the magnetospheric field. However, the variation was not observed at all neutron monitor stations. In the beginning of the recovery phase, the intensity oscillated with a period of about 10 hours and amplitude of 3%.

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